Dinner in Philipsburg would be the closest. Chesterfields, L'Escargot, and the Green House come to mind. There is a beach right there at Guana Bay but there are no services and the surf can be quite rough. The closest other one is Dawn Beach. Also, you are in the perfect spot to make a counter-clockwise trip around the island on Sunday. The traffic will be light and there are some neat places to stop including the Sunset Bar @ Grill to watch the planes land and the nuts try to kill themselves.