Costa Rica is generally safe for a visitor who leaves nothing in a rental car and keeps a bag closed in San José and on the beach. The towns in this guide are an ordinary trip. The thing that changes a plan is a first drive after dark, especially the climb to Monteverde or the dirt road into Santa Teresa.

Yes, with the same care you would use in any beach town. Use the hotel safe. Do not leave a bag on the sand while you swim, including at the sunset crowd in Tamarindo. Do not leave a bag, a phone, or a passport visible in a parked car, even for five minutes at a trailhead or a gas station. A towel over the seat is still a reason for a broken window. Empty the cabin before you walk away.

In San José, the useful part of downtown is the National Theatre, the museums around Plaza de la Cultura, and the central market. Do the market in the morning, keep the bag in front, and pay cash in small bills. Many stalls fade after lunch. On a crowded sidewalk the phone stays in a pocket, not in your hand.

At the airport, use the official taxi line or a transfer you already booked. An unmarked car at the curb is the one to skip. In town, a red taxi uses a meter, called a maría. In a rural taxi, agree the fare before you leave.