I know this is a long shot, but do any of you guys know how to sail?

Me and the wife want to get 2 other couple friends of ours and fly over to the US Virgin Islands, rent a 50' catamaran sailboat, and island hop for 7-10 days. Problem is I have pretty much zero sailing experience. I have ran big boats before but never a sailboat. I mean, I know the concept and somewhat know the lingo but have zero experience actually captaining a sailboat.

Are we biting off more than we can chew?