Petty crime can be a problem on both sides of the island. Always lock your valuables and travel documents in your room safe or your hotel's front-desk safe. When sightseeing in a rental car, keep valuables locked in the trunk or car, or better yet, don't leave anything in the car. Never leave your things unattended at the beach. Despite the romantic imagery of the Caribbean, it's not good policy to take long walks along the beach at night.