Currency
The colón (CRC) is the official currency. US dollars are widely accepted in tourist areas, hotels, and larger restaurants; many places quote prices in dollars. It's worth having some colones for local buses, sodas (small local restaurants), markets, and smaller towns. ATMs (cajeros automáticos) dispense both colones and dollars in major towns; Visa and Mastercard work at most ATMs.
Costs
Costa Rica is not a cheap destination by Central American standards. Budget travelers hostel-hopping and using public buses can get by on $40–60 per day. Mid-range travel with a private room, some tours, and restaurant meals typically runs $100–150 per day. A 4WD rental, national park fees, and organized tours add up quickly.
Communications
Mobile coverage is good in most populated areas and towns; patchy in remote highlands and some coastal areas. The two main operators are Kölbi (government) and Claro/Movistar. A local SIM card is cheap and easy to buy at the airport or any phone shop. Kölbi's coverage is generally best in rural areas. Wi-Fi is available in most guesthouses and cafes.
Electricity
120V, 60Hz. Plug type is the same flat-pronged style used in the United States. No adapter needed for North American devices.
Time zone
UTC-6 (no daylight saving time). Same time as Central Standard Time in the US.
Opening hours
Government offices and banks typically operate Monday–Friday 8am–4pm. Shops vary; supermarkets are open daily. Restaurants and sodas in tourist areas keep flexible hours. National park offices often open at 7am or 8am.
Tipping
A 10% service charge (servicio) is automatically added to restaurant bills. Tipping beyond that is optional but appreciated for good service. Tour guides typically receive $5–10 per person per day as a tip. Hotel staff tips are discretionary.
Safety
Costa Rica is generally safe by regional standards. Petty theft (bag snatching, pickpocketing) occurs in San José, particularly around La Coca-Cola bus terminal and in Limón city. Keep valuables out of sight, don't leave bags unattended on beaches, and be cautious at night in unfamiliar urban areas. Violent crime targeting tourists is relatively rare but not unknown. The US State Department maintains a Level 2 ("Exercise Increased Caution") advisory.
Rip currents are a genuine hazard on Pacific beaches; several tourists drown each year. Look for flags indicating conditions and swim at staffed beaches when possible.