Volunteer and Visit Paradise

The New York Times had an article a few days ago about volunteering with the Appalachian Mountain Club in St. John, USVI. You could get a reduced rate in a large tent for $55/night vs. the usual $90. This would require a 4-5 hour daily session of manual labor. That doesn't exactly sound like what I would like to be doing on vacation, unless it provided a good social environment with the group.