Reserve a car well in advance. Vieques is a small island with limited rental cars available. There are many isolated and secluded beaches that you will want to visit that can only be reached by automobile, preferably a jeep or 4-wheel drive as many of the roads to the beachs are unpaved, filled with holes and bumpy!
Plan your trip to the bioluminescent bay during dark nights. For the best viewing conditions plan your trip to Vieques when there is VERY LITTLE, TO NO VISIBLE MOON in the sky.
US Standard Outlets
Vieques, Puerto Rico is a US Commonwealth therefore, you do not need a passport if you are travelling from within the US and have a valid US driver's license. If you are travelling to any other Carribean destination you may need a passport and should check with your local US embassy.
Look for the sign marked #10 it is a favorite location on Blue Beach (Playa La Chiva) where there is a large sandbar and it's shallow forever.
For fresh fish visit Pescaderia Angelyz right next to the Ferry Port.
For fresh fruit/produce visit the open-air market located on route 201 at the intersection of 200 and 201. Tuesday mornings you can stop here and stock up on fresh fruits as well as a range of fresh produce.