What should we do in St. Thomas?

[taffer]

Hello: We are a 31 and 29 year old couple hoping to make the most of our honeymoon experience this October when we cruise out of San Juan and stop at port of calls, (in order) St. Thomas, Dominica, Barbados, St. Lucia, St. Kitts, and lastly, St. Maarten. We will be flying in on Saturday and staying at Marriott Stellos. We want to be adventures/trying new things like zip lining, snorkeling, horseback riding, etc..., and would like to relax some as well. What would be a good itenary mix of excursions and relaxing ideas? We are curious if anyone had thoughts on most sees and when great times/ports are great to relax at? Everyone's thoughts are appreciated.