To eliminate some of that work, consider using a company that allows you to book all your activities through one vendor. This saves you obey and simplifies your vacation.....which is what we want!
Here are 3 activities that are SURE THINGS:
1. Snorkeling - Anyone, from the most adventurous to the most timid, can enjoy snorkeling. Even people who can't swim can snorkel! All you need is a life vest to make you float on the surface like a bird floating above the landscape. The beauty of the ocean will also provide as a distraction to those who are still nervous :)
2. Sailing - As long as the sea is calm, sailing is tremendously relaxing and a perfect activity for a group. The scenery is amazing, a slight breeze will cool you off, and there are always opportunities for fishing or other water activities if you choose.
3. Kayaking/Bio bay - Although some people have never kayaked before, becoming an expert for the day is not all that difficult and even if you fall out of the kayak, the water is usually shallow and at least you'll have a great story! The bioluminessence is also a very unique phenomenon which will bring you out of your comfort zone because it's worth it!
When you come to the USVI, book your trip with somebody who knows the market so you can enjoy your trip rather than stress about it!