We are also on that cruise. So far there are 11 of us on this trip. My oldest daughter will be getting married at our first port of call on September 1st at the Grand Old House on Grand Cayman (get ready for the party on board that night!). Additionally my youngest daughter will be celebrating her 21st birthday.
My husband and I took this same cruise in May of 2008 (in fact exactly 1 year ago from tomorrow - man how time flies). We had so much fun (just the 2 of us that time) that we even booked the same cabin #7235.