Currency: The US dollar is the official currency. ATMs are available in Koror. Credit cards are accepted at most hotels, dive operators, and larger restaurants, but bring cash for markets, small shops, and anything on the outer islands.
Language: Palauan and English are both official languages. English is widely spoken in hotels, dive shops, and restaurants. You'll get by fine without any Palauan, though a few words of greeting are always appreciated.
Health: Medical facilities in Koror are adequate for routine care, but serious conditions may require evacuation to Guam, the Philippines, or the US mainland. Travel insurance with medical evacuation coverage is strongly recommended — evacuations can cost tens of thousands of dollars. Dengue fever is present; use insect repellent. Standard vaccinations (hepatitis A, typhoid) are recommended.
Reef-safe sunscreen: Palau was the first country in the world to ban certain sunscreen chemicals that damage coral. Products containing oxybenzone, octinoxate, and several other compounds are prohibited. Bring reef-safe sunscreen from home, or buy it in Koror. Customs may confiscate non-compliant products at the airport.
Diving safety: Palau has strong currents at many sites. Always dive with a reputable operator and follow your divemaster's briefing. Blue Corner in particular is for experienced divers — conditions can shift fast. The Diving Emergencies chamber is at Koror.
Communication: Mobile coverage in Koror and the main islands is decent. International data roaming works but is expensive; local SIM cards are available in Koror. Wi-Fi is available at most hotels.
Electricity: 120V, 60Hz, with US-style plugs. European and Australian travellers need adaptors.
Time zone: Palau is UTC+9 (same as Japan), no daylight saving.
Tipping: Not expected in the traditional Palauan way, but tipping dive guides and boat crew is common and appreciated given the service quality.