Depending on where you are, there are opportunities for catamaran tours, hiking, snorkeling, or exploring cities rich with history. As the island and its economy recovers from Hurricane Maria, the best thing to do is to visit locally owned shops and restaurants. Not only do you get a more authentic experience, but your dollars will go directly to the people who live on the island. Trip Advisor and Lonely Planet have great lists of things to do and places to see.