Hi Jill,
We just did this in March/April. It was nice. I really like catamarans versus a motorboat. There is room to walk around, lay out in the sun, relax and such.
There were only two things that I wished were different. There should have been some music onboard. I was hoping for a little reggae or something for the ride, but there was none. The second was not in anyones control. I wished there were less kids on board. There was a group of about 20 - 13 year olds and they got a bit obnoxious with kicking peoples stuff around, hitting you as they chased each other around, sliding in and out of the hatch, things like that. It would have been perfect had it not been for the "unruly ones". The boat was nice, plenty of space, has a cash bar (those ice cold beers went down great after drinking in some salt water.). The snorkeling time at each spot was perfect. The stingray time was a good amount of time as well, and for the price, you couldn't beat it. We really enjoyed it.
Mrsfuzzmo