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StayChartTravel GuidesGuam
Guam
GU · GuamLocal Field Guide · 8 min read

Guam Practical Travel Guide: G-CNMI ETA, Tumon Reef Stays, Rental Cars & Stroll Tips

Everything to prep before a 4-hour Pacific hop: coral shoes for Tumon Lagoon, meat-free customs rules, and protecting your rental car at scenic lookouts.

Explore Guam 90-Day Hotel & Tour Charts

Guam At-a-Glance Essentials & Packing Check

Jump to Pre-Trip & Local Tips
Plugs & Voltage

120V / 60Hz · US standard two flat-pin Type-A / grounded Type-B outlets. Pack a 110V flat-prong adapter plus a multi-port GaN charger (220V-only hair irons heat poorly on 120V).

Weather & Layers

29–31°C (84–88°F) year-round: Jan–May brings drier trade winds, while Jul–Nov sees brief 15-minute tropical squalls followed by rainbows. Malls and steakhouses blast freezing US A/C—pack a light zip hoodie!

Transit & Payment

US Dollar (USD) territory—cards work everywhere except Wednesday Chamorro Village night stalls ($1/$5 bills handy). Korean, Japanese & Taiwanese physical driver’s licenses work for 30-day car rentals, and "Stroll" replaces Uber!

Rooms & Water

Island tap water is very hard coral-limestone groundwater—buy 1-gallon bottled water jugs at ABC Stores or Kmart for drinking/formula, and wear thick-soled coral aqua shoes because Tumon’s shallow lagoon floor is sharp!

Essential Gear Check:🤿Thick Rubber-Sole Coral Aqua Shoes & Anti-Fog Snorkel MaskChartBuy🚗Clip-On Air-Vent Car Phone Mount & Fast Dual-Port Car ChargerChartBuy☀️Water-Resistant Reef-Friendly SPF50+ Sunscreen & Soothing CareChartBuy🔌110V Type-A Adapter + 65W Multi-Port GaN Fast Travel ChargerChartBuy🚿Compact Travel Shower Filter for Island Limestone WaterChartBuy
Guam Pre-Trip Prep
PRE-TRIP ACTION CHECKLIST · BEFORE YOU FLY

What to Do Before Your Guam Trip

Tap each step to track your e-Arrival QR, transit reservations, and suitcase essentials. Progress saves automatically in your browser.

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Pre-Trip Timeline Tasks (D-30 to D-1)

Apply for Free Guam-CNMI ETA at Least 5–7 Days Ahead (Or Hold Valid US ESTA)D-10

Old paper I-736 forms on the plane are GONE! Eligible visa-waiver visitors without a paid US ESTA must submit the free online **G-CNMI ETA** on the official `.gov` CBP site at least 5 days before departure (valid 2 years for stays up to 45 days; airlines deny check-in without it!).

US CBP Official G-CNMI ETA
Submit Guam Customs EDF QR (Within 72h) & Remove ALL Meat/Ramen Flakes!D-3

Fill out one Guam Electronic Declaration Form (EDF) per family within 72 hours of landing and screenshot the QR code. Warning: US federal agriculture officers strictly confiscate and fine ANY meat/pork/beef/poultry items—including cup-ramen beef soup packets, jerky, spam, or kids’ sausages! (Buy Korean/Japanese ramen locally at Village of Donki or Kmart instead.)

Guam Customs Official EDF
Pack Physical Domestic Driver’s License, Pre-Book Child Car Seats & Install StrollD-7

Digital mobile licenses are NOT accepted at rental counters—pack your physical plastic card! Under Guam US law, children under age 4 need a full car seat and ages 4–11 (under 4 ft 9 in / 145 cm) MUST ride on a booster seat. Also verify SMS login on the **Stroll** app before leaving home.

Pack Hard-Sole Coral Aqua Shoes, UV Rash Guards & Waterproof Phone PouchD-3

Bare feet or flimsy mesh socks get sliced fast on Tumon and Ritidian coral heads, and equatorial Pacific UV burns bare shoulders in 20 minutes while snorkeling.

Suitcase Gear Packing Check

🤿Thick Rubber-Sole Coral Aqua Shoes & Anti-Fog Snorkel Mask
ChartBuy
🚗Clip-On Air-Vent Car Phone Mount & Fast Dual-Port Car Charger
ChartBuy
☀️Water-Resistant Reef-Friendly SPF50+ Sunscreen & Soothing Care
ChartBuy
🔌110V Type-A Adapter + 65W Multi-Port GaN Fast Travel Charger
ChartBuy
🚿Compact Travel Shower Filter for Island Limestone Water
ChartBuy
AIRPORT TO CITY · TRANSIT COMPARISON

Best Ways from the Airport / Station into Guam

Compare Transit Passes & Tours

Stroll App Ride-Hailing (Guam’s Local Uber)

10–15 mins!

Pickup right at A.B. Won Pat Airport (GUM) outer arrivals curb straight to any Tumon or Tamuning resort (24/7)

Hands-down easiest option for 2 AM–4 AM red-eye arrivals when renting a car only for 1–2 days mid-trip.

Typical Fare~$18–$28 USD upfront (luggage included, auto card payment)

24-Hour Airport Rental Car Pickup

10–15 mins drive after paperwork

Major global & Korean/Japanese-friendly rental desks inside GUM arrivals hall—drive 10 mins down Marine Corps Dr to Tumon, WITH free resort parking!

Families hauling strollers/luggage—unlike Honolulu, almost every Guam hotel offers FREE self-parking, saving ~$50 in round-trip airport transfers right away!

Typical Fare~$45–$75/day compact SUV/sedan (hotel parking is $0 in Guam!)

Resort Airport Shuttle / Official Metered Taxi

12–20 mins

Taxi dispatcher stand right outside arrivals exit or hotel-branded van waiting with your name placard

Travelers without an active data eSIM at landing or multi-generational groups pre-booking a large resort van.

Typical Fare~$25–$38 USD (metered taxis add $1 per suitcase + 10–15% tip)
NEIGHBORHOOD SELECTOR · WHERE TO STAY

Best Areas to Book Your Hotel in Guam

Lagoon Snorkeling & Walkable Hub

Central Tumon Bay (Gun Beach to Ypao Beach)

Outer barrier reefs block big ocean swells, turning all of Tumon Bay into a giant calm swimming pool teeming with clownfish—plus you can walk to T Galleria, JP Superstore, ABC Stores, and sunset beach bars.

Heads-up: Compare renovation years carefully: ultra-modern towers (like The Tsubaki Tower or Dusit Thani) sit right beside older 1990s resorts that can feel humid if room A/C isn’t left on.
Kids’ Waterparks & Donki/GPO Runs

Tamuning & Alupang Bay

Home to Guam’s biggest all-day slide & wave-pool resorts plus 5-minute drives to Guam Premier Outlets (GPO Ross!), Kmart, and the massive Village of Donki mega-store.

Heads-up: Walking to central Tumon shops in midday heat is too far—plan on riding the Red Guahan Shuttle bus, Stroll, or a rental car.
Quiet Ocean Bluffs & Golf/Repeaters

Hagåtña & Southern Coast Scenic Escape

Waking up to wide-open Philippine Sea panoramas without beach crowds, steps from Wednesday Chamorro Village market and head-start drives down to Emerald Valley, Cetti Bay, and Inarajan Pools.

Heads-up: A full-stay rental car is 100% required here since restaurants and convenience stores aren’t clustered outside the lobby.
STREET-SMART SURVIVAL KIT

Guam Must-Have Apps, Tipping Rules & Scam Watch

Apps to Download First

Stroll (essential ride-hailing—Uber, Lyft & Grab do NOT work in Guam!), Google Maps (download Guam offline map before driving south to Merizo), and OpenTable (beachfront sunset BBQ & steak tables).

Tipping & Dining Etiquette

Check your Guam restaurant receipt BEFORE tipping twice! Roughly 60–70% of Tumon tourist restaurants ALREADY print a "10%–15% Service Charge" right on the bill—if it’s there, tap $0 extra tip (or leave $1–$2 cash only for standout care); if NOT included, tip 15%–18%. Leave $2–$3/day on the bed for housekeeping, and NEVER stand or step on live coral heads in Tumon Bay!

Scams & Pickpocket Watch

Three non-negotiable Guam safety rules: 1) **Car window smash-and-grabs** happen fast at Two Lovers Point, Emerald Valley, Cetti Bay, and Ritidian parking lots—leave ZERO shopping bags, backpacks, or purses visible inside your rental car (lock everything in the trunk BEFORE pulling up!); 2) Under strict US child-endangerment law, NEVER leave a sleeping child alone in an air-conditioned car at Kmart/GPO even for 2 minutes (passersby call 911 immediately!); 3) Never swim past the outer whitewater reef break where rip currents pull out to open ocean.

Pharmacy & Emergency Info

Dial 911 for emergencies. Guam Regional Medical City (GRMC) in Dededo and ExpressCare clinic in Tumon treat travelers daily (carry travel insurance!), while 24-hour Kmart and Village of Donki stock US & Japanese fever reducers, aloe vera, and diapers.

LOCAL FIELD GUIDE · 8 MIN READ

Guam Practical Travel Guide: G-CNMI ETA, Tumon Reef Stays, Rental Cars & Stroll Tips

Everything to prep before a 4-hour Pacific hop: coral shoes for Tumon Lagoon, meat-free customs rules, and protecting your rental car at scenic lookouts.

Guam — Red Rice, Finadene Sauce, US-Sized Portions & Checking Bills for Auto-Gratuity
Chamorro BBQ & Portions

Red Rice, Finadene Sauce, US-Sized Portions & Checking Bills for Auto-Gratuity

Guam’s comfort food blends island smoke with Pacific freshness: smoky **Chamorro short-rib & chicken BBQ** served alongside orange annatto **red rice** and tangy soy-calamansi-chili **finadene** dipping sauce (at local legends like Meskla, Proa, or Wednesday’s Chamorro Village night market), crispy coconut-crusted shrimp, handmade Chamorro burgers, and fresh tuna poke bowls. Keep US portion math in mind—two adults ordering two full rib platters plus an appetizer will drown in leftovers, so ordering **one massive meat platter + one fresh poke or Caesar salad to share** hits the sweet spot!

Before tapping your card after dinner in Tumon, always check the subtotal lines on your printed receipt. Unlike mainland America where tips are left blank, roughly two-thirds of Tumon tourist restaurants automatically print **"Service Charge (SC) 10%–15%"** into your total—meaning you do NOT need to write an extra 18% tip on the signature line! Only add a 15% tip when no service charge appears.

Street-Smart Local Tip

Landing hungry at midnight or craving breakfast spam musubi & cold drinks? The massive **Village of Donki** near the airport and **24-hour Kmart** have huge hot-deli counters at half resort prices!

Planning heavy BBQ platters, iced drinks & freezing A/C restaurant hops?Check travel probiotics & personal care 90-day prices on ChartBuy
Guam — Picking Between Tumon Beachfront Luxury & Mega-Waterpark Resorts (Plus Humidity Hacks)
Lagoon Reef vs Waterparks

Picking Between Tumon Beachfront Luxury & Mega-Waterpark Resorts (Plus Humidity Hacks)

Choosing the right Guam resort comes down to who is in your group. Couples, honeymooners, and parents with toddlers under 4 usually love **north-to-central Tumon Bay oceanfront towers** (Gun Beach down to Pleasure Island & Ypao Beach), where calm knee-deep turquoise water sits steps from modern rooms and shopping arcades. Families with energetic 5-to-13-year-olds often get higher mileage from **all-inclusive waterpark resorts** (like PIC along southern Tumon or Tamuning’s wave-pool properties) where waterslides, kayaking lagoons, and buffet meals are bundled into one wristband—or split a 4-night trip 2 nights + 2 nights!

Two practical stay tips once you check in: keep balcony sliding glass doors tightly latched so tropical ocean humidity doesn’t trip the room A/C sensor (and hang wet rash guards inside the bathroom rather than over wooden balcony rails where sudden squalls soak them again). Also check Guam’s daily **tide chart**—at dead low tide in the afternoon, Tumon’s reef can drop to shin-deep, so morning high tide gives the deepest, clearest snorkeling over Ypao’s coral gardens!

Street-Smart Local Tip

Guam enjoys US duty-free port status (0% sales tax across the entire island!)—meaning luxury boutiques at T Galleria / Tumon Sands and Ross/GPO have zero checkout tax added to price tags!

Heading out to Tumon Lagoon or Ritidian’s crystal shallows with the family?Check coral aqua shoes & beach leisure gear on ChartBuy 90-day chart
Guam — 3 Crucial Guam Rental Car Laws (School Buses & Center Turn Lanes!) Plus Using Stroll
Guam Driving Laws & Stroll

3 Crucial Guam Rental Car Laws (School Buses & Center Turn Lanes!) Plus Using Stroll

Driving in Guam feels wonderfully relaxed compared to mainland US freeways—speed limits top out at just **35 mph (56 km/h)** and island coral-aggregate asphalt gets slick as soap during the first 5 minutes of rain, so nobody rushes! Just memorize three strict US Guam road rules: 1) When a **yellow school bus** flashes red lights and swings out its STOP sign, **BOTH directions of traffic** (unless separated by a raised concrete barrier) must come to a dead stop until the lights turn off ($500 fine!); 2) Use the center yellow-striped **shared left-turn lane ("suicide lane")** on Marine Corps Drive ONLY to decelerate and turn left, never for cruising; 3) Watch for **"NO TURN ON RED"** signs at major Tumon intersections before making a US right-on-red.

Planning to skip driving or drink sunset cocktails? Download **Stroll** (Guam’s homegrown ride-hailing app, since neither Uber nor Grab operates on the island) alongside the hop-on **Red Guahan Shuttle** connecting Tumon hotels, Micronesia Mall, Kmart, and GPO. For a bucket-list 4-hour loop, rent a car for just one day to cruise **Route 1, 2 & 4 around Southern Guam**—hitting Emerald Valley’s neon-blue canal, Cetti Bay Overlook, Fort Nuestra Señora de la Soledad, and Inarajan Natural Pool!

Street-Smart Local Tip

Heading up north to pristine Ritidian Point Wildlife Refuge? Check official USFWS opening days/hours first (often open Wed–Sun ~7:30 AM–4:00 PM; closed rough-surf days, zero cell signal or shops at the beach!).

Renting a car for a Southern Guam coastal loop and GPO outlet haul?Compare car phone mounts & dual PD chargers on ChartBuy 90-day chart
Guam — Magenta Tumon Sunsets, Wednesday Chamorro Night Market, Dolphin Cruises & Stargazing
Sunsets, Dolphins & Stars

Magenta Tumon Sunsets, Wednesday Chamorro Night Market, Dolphin Cruises & Stargazing

Around 5:45–6:30 PM, Tumon Bay’s west-facing horizon ignites into fiery coral and violet reflections right across the calm lagoon. Claim a beachfront table at **The Beach Bar** on Gun Beach (book sunset tables online ahead!) or join a polynesian **fire-dance beachside BBQ dinner show** where dancers spin flaming knives feet from the water. If your trip includes a **Wednesday evening (5:30–9:00 PM)**, head straight to **Chamorro Village Night Market** in Hagåtña with small $1/$5 bills for $2 coconut sashimi, freshly grilled BBQ skewers, mango smoothies, and local Chamorro live bands.

By morning, board a **wild spinner-dolphin & reef snorkel catamaran** from Agat Marina (morning departures enjoy calmer swells and higher dolphin pod sightings—give kids motion-sickness syrup 30 minutes prior if sensitive!). On clear moonless nights, drive or join a guided **Guam stargazing photo tour** away from Tumon’s hotel lights toward northern cliffs or Tagachang, where the Milky Way arches vividly over the Pacific.

Street-Smart Local Tip

In Guam stores, liquor sales stop after 2:00 AM and the legal drinking age is strictly **21+** (bring passport/ID even in your 30s when buying beer at ABC Stores or Kmart!).

Shooting underwater clownfish clips, dolphin jumps, and starry-sky family portraits?Check action-cam mounts, tripods & gimbals on ChartBuy 90-day chart

Guam Trip Planning FAQ

Q. Should I apply for the free Guam-CNMI ETA or the paid $21 US ESTA for Guam?

If you already hold an active US ESTA (from a recent or upcoming Hawaii/mainland US trip), you are all set and do NOT need G-CNMI ETA! If traveling ONLY to Guam/Saipan for up to 45 days, apply for the **free G-CNMI ETA** at least 5–7 days prior (note: ESTA holders often get dedicated faster kiosks on peak arrival waves, though both clear smoothly today).

Q. Do I need an International Driving Permit (IDP) to rent a car in Guam?

Drivers aged 21+ holding a valid physical driver’s license from Korea, Japan, Taiwan, the US, or English-printed licenses can legally rent and drive in Guam for up to **30 days** using their **original domestic plastic license** alone! Just remember mobile phone license apps are NOT accepted at rental counters.

Q. Can I pack baby food pouches, porridge, or cup noodles for kids into Guam?

Plain microwavable white rice, roasted seaweed sheets ("gim/nori"), plain seafood/veggie snacks, and unopened powdered infant formula pass smoothly when declared on your EDF—HOWEVER, **100% of beef, pork, chicken, ham, sausage, or bone-broth baby porridge pouches and meat-broth cup ramen are banned**! Buy meat baby jars and cup ramen at Guam’s Kmart or Village of Donki right after landing.

VERIFIED LOCAL SPOTS MAP

Pinned Local Eats & Cafes Across Guam

Authentic local dining spots and independent cafes clustered around top hotel neighborhoods, linked directly to mobile map apps.

🟠 Local Dining🟢 Local Cafe
Loading local dining map...
1

Sam's Steak & Seafood

Grill & BBQ

Tutuhan

Google MapsDirections
2

Panda Express

Chinese & Dim Sum
Google MapsDirections
3

Tokyo Mart Express

Japanese Dining
Google MapsDirections
4

Tony Roma's

Grill & BBQ
Google MapsDirections
5

Capricciosa

Italian Trattoria
Google MapsDirections
6

Carmen's Cha Cha Cha

Poke & Island Grill

Archbishop Felixberto Chamacho Flores Street 192

Google MapsDirections
7

Chatime

Independent Cafe

South Route 4 O'Brien Drive 302

Google MapsDirections
8

Hava Java Cafe

Independent Cafe

Aspinali Ave 148

Google MapsDirections
90-DAY GEAR TRACKER · PACK SMARTER

Must-Pack Gear Before Flying to Guam

Locked in a solid hotel rate? Time your travel gear too — check real 90-day AliExpress price history on ChartBuy before you overpay at the airport.

🤿Tumon Reef Must-HaveChartBuy · 90-Day Gear Price Chart

Thick Rubber-Sole Coral Aqua Shoes & Anti-Fog Snorkel Mask

Tumon Bay and Ypao Beach look like powder sand from shore, yet two steps into the crystal water reveal razor-sharp dead coral fragments—hotel rental gear adds up fast.

Compare coral aqua shoes & snorkel gear 90-day prices on ChartBuy
🚗Hands-Free Guam LawChartBuy · 90-Day Gear Price Chart

Clip-On Air-Vent Car Phone Mount & Fast Dual-Port Car Charger

Many base Guam rental cars lack wireless CarPlay and Guam police ticket drivers holding phones in hand ($100+ fine!)—an air-vent clip keeps Google Maps at eye level.

Track car phone mounts & fast car chargers on ChartBuy 90-day chart
☀️Equatorial UV ShieldChartBuy · 90-Day Gear Price Chart

Water-Resistant Reef-Friendly SPF50+ Sunscreen & Soothing Care

At 13°N latitude, Guam’s UV index hits 11+ ("Extreme") by 10:30 AM, reflecting off white coral sand to blister backs of knees and ears while floating.

See sun protection & travel personal care 90-day prices on ChartBuy
🔌US 120V Type-A HubChartBuy · 90-Day Gear Price Chart

110V Type-A Adapter + 65W Multi-Port GaN Fast Travel Charger

Charging two phones, an action cam for dolphin cruises, kids’ tablets, and power banks overnight takes forever on slow hotel lamp USB ports.

Compare 65W GaN multi-port chargers on ChartBuy 90-day chart
🚿Kids & Sensitive SkinChartBuy · 90-Day Gear Price Chart

Compact Travel Shower Filter for Island Limestone Water

Guam’s northern aquifer sits inside porous coral limestone, and older oceanfront hotels have salt-weathered pipes—parents traveling with toddlers notice filters turning yellow fast.

Track compact travel shower filter 90-day prices on ChartBuy

Popular Passes, Tours & eSIMs in Guam

[Guam One Day Pack] Dream Dolphin Cruise + Starlight Four Cut Combo Package
API Live
70
Guam Popular Experience
4.3(7)Comparing 2 booking sites

[Guam One Day Pack] Dream Dolphin Cruise + Starlight Four Cut Combo Package

Checked 2026-11-08
Free Cancel
Day 1
Klook
$88/ ticket
[Guam Dolphin Cruise] Two of Guam’s representative tours at special prices!!!* Dolphin Cruise + Starlight Tour
API Live
70
Guam Popular Experience
4.6(19)Comparing 2 booking sites

[Guam Dolphin Cruise] Two of Guam’s representative tours at special prices!!!* Dolphin Cruise + Starlight Tour

Checked 2026-11-08
Free Cancel
Day 1
Klook
$25/ ticket

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