Things That Catch First-Time International Travelers Off Guard

Many US banks block foreign transactions by default as a fraud-prevention measure. If you haven't notified your bank of your travel dates and destination before leaving, your card may simply be declined at an ATM or point-of-sale terminal abroad. Even when it does work, foreign transaction fees — often 1–3% per purchase — can add up quietly.

Before you travel, call or message your bank to set a travel notice. Ask specifically about foreign transaction fees and international ATM withdrawal charges. Some accounts waive these fees; others don't. It's worth knowing the difference before you're standing at a cash machine in an unfamiliar city.

The US uses Type A and B plugs and runs on 120 volts. Much of Europe, Asia, Africa, and other regions use different plug shapes and operate on 220–240 volts. A physical adapter lets your plug fit the socket — but if your device isn't dual-voltage (check the label on the charger or device for "100–240V"), plugging it in without a voltage converter can damage it.

Most modern laptops, phone chargers, and camera chargers are dual-voltage, but hair dryers, electric razors, and some small appliances often are not. Research your destination's plug type before you pack, and consider a universal travel adapter that covers multiple regions if you're visiting more than one country.

Many countries require that your passport be valid for at least six months beyond your planned departure date — not just valid on the day you arrive. A passport expiring in four months may be perfectly legal at home but trigger a boarding denial at the gate or a refusal of entry on arrival.

Check the specific validity requirements for every country on your itinerary, including transit countries. The US Department of State's travel pages and each destination country's embassy website are the authoritative sources. If your passport is within six months of expiring, renewing before you book is the safest move. For more detail on these distinctions, our entry requirements reference guide explains exactly what each term means.

If your international itinerary includes a layover in a country that isn't your final destination, you may need to clear immigration and customs in that transit country — even if you're just changing planes. Some countries require a transit visa for this, even for short stops. Others allow airside transit without entry. The rules vary significantly by your citizenship and the country you're transiting through.

This catches many first-timers off guard because it isn't always flagged clearly at booking. Always verify transit requirements for every country your flight routes through, not just your final destination. Your airline may not catch this error on your behalf.

Card payments are widely accepted in many tourist-heavy destinations, but plenty of places — local markets, small restaurants, rural areas, taxis, entrance fees at smaller attractions — still operate primarily on cash. Arriving with no local currency and expecting to find an ATM immediately isn't always realistic, especially if you land late or at a smaller airport.

Exchange a modest amount of local currency before you leave, or use an airport ATM on arrival as a fallback. Avoid currency exchange kiosks in busy tourist zones, which typically offer poor rates. Understanding the general purchasing power of the local currency helps you avoid accidentally over- or under-tipping, too.

In the US, tipping 15–20% at restaurants is standard practice. In Japan, tipping can be considered rude. In parts of Europe, rounding up or leaving small change is customary, but not the same percentage-based obligation familiar to American diners. In some destinations, service charges are already included in the bill.

Getting this wrong won't ruin your trip, but understanding local customs shows respect and helps you avoid unintentional offense. A quick search for "tipping etiquette in [destination]" before you go is a small investment that pays off in smoother interactions. Assuming local customs mirror what you know at home is one of the most common planning errors US travelers make.

Traveling internationally with prescription medications involves rules that many first-timers don't anticipate. Some medications that are legal in the US are controlled or prohibited in other countries. Quantities may be capped. Documentation — such as a letter from your prescribing physician or a copy of the prescription — may be required at customs.

Research your specific medications and your destination's importation rules well ahead of departure. Keep medications in their original labeled packaging and carry documentation in your carry-on, not checked luggage. For a thorough breakdown, our guide to traveling with medications covers documentation, storage, and how to check destination-specific rules.