At the end of the pier, there is a shuttle to Christiansted for $16 round trip per person. In Christiansted there are several National Historic Sites and several nice shops to visit.
We took the America's Cup Yacht race excursion. It was one of the best excursions that we've ever been on. You do not need to be an active part of the crew, but it is not that physically demanding if you are. This unique experience is worth every penny you spend for the great memories you will have later. We can't wait to go back.