Using local ATMs is almost always the cheapest way to get foreign currency. Exchange-counter rates at airports and tourist areas typically lose you 5-10%. A no-foreign-fee debit card (Charles Schwab, Wise, Revolut) plus an ATM that doesn't add a local surcharge gets you close to mid-market rate.
Carry-on size limits vary by airline. US majors typically allow 22 x 14 x 9 inches (56 x 36 x 23 cm). European budget carriers (Ryanair, Wizz, Vueling) are more aggressive β 40 x 25 x 20 cm for free, larger bags incur a fee. Always check the specific airline before flying, especially within Europe and Asia.
A day trip is an out-and-back excursion from a base city, typically 2-6 hours each way and back the same evening. Most strong-base cities (Paris, Tokyo, Bangkok, Buenos Aires) anchor 3-5 worthwhile day trips, often by train or organized tour. Useful when you want variety without packing and unpacking.
An eSIM is a digital SIM activated via QR code, available on most phones from the iPhone XR / Galaxy S20 onward. For travel, services like Airalo, Holafly, and Saily sell country- or region-specific data plans starting around $5 for 1GB. Faster and cheaper than international roaming with your home carrier in nearly every case.
A layover is a stop between two legs of an itinerary, ranging from a 90-minute connection to a multi-day stopover. Long layovers can become a free bonus mini-trip β Iceland, Singapore, Dubai, Doha, and Istanbul all run airline programs that hotel-and-tour you during 12+ hour stops.
Mid-range is the price tier between budget and luxury β typically a 3-star hotel or quality boutique guesthouse, sit-down restaurant meals (not fine dining), public transit plus the occasional taxi, and admission to major attractions. On MapSorted comparison pages, mid-range daily totals run roughly $80-200 across destinations.
A stopover is a deliberately long layover (24+ hours, sometimes weeks) added to a long-haul itinerary, often at no extra airfare. Icelandair lets you stop in Reykjavik for up to 7 days transatlantic; Singapore Airlines and Emirates run similar programs. The cheapest way to add a city to a trip.
Tipping varies enormously by country. Generally: 18-22% expected at US restaurants, 10-15% in much of Europe, no tip needed in Japan or South Korea (where tipping can be confusing or insulting), and a 5-10% rounding-up in Southeast Asia. Hotel housekeeping $1-2 per night in the US, generally not expected elsewhere.
A travel adapter converts a plug shape β not voltage. Most modern phones, laptops, and cameras accept 100-240V automatically, so a simple pin adapter is enough. Higher-draw devices like hair dryers may need a voltage converter as well. The most-used types: Type A/B (US), Type C (most of Europe), Type G (UK, Singapore, parts of Southeast Asia), Type I (Australia, China, Argentina).
Travel insurance covers medical emergencies, trip cancellations, baggage loss, and (on some plans) electronics theft. Worth it for international trips, especially to countries with expensive private healthcare like the US. Common providers: World Nomads, SafetyWing (popular with digital nomads), and Allianz. Read the medical-cover limit β anything under $100K is thin.