I sailed around BVI last March and LOVED it! I think my cousin went to a wedding on St. John but we only stopped there (at a beautiful restaurant called the Equator!) Like others said, Jost van Dyke is very fun but beware of travel books that suggest that you "must see" the Bitter End and some cave thing as they are both built up tourist traps. It sounds like there are a few of us on the forum that can help out, so let us know when you get to seriously searching. Best wishes for YOUR wedding, too!