For fresh fruit/produce visit the open-air market located on route 201 at the intersection of 200 and 201. Twice a week, Tuesday and Friday mornings you can stop here and stock up on fresh fruits as well as a range of fresh produce.
At the entrance to Garcia Beaches is Sol Food, a food cart that uses fresh ingredients, has vegetarian selections and was ranked among the top restaurant in Vieques on trip advisor. The word is out on this spot; noted in Caribbean Travel + Life's Caribbean Confidential and fawned over by the world's best chefs "Ducasse was blown away by the carnitas, commenting on the clean balance of flavors".
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!
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.