we did the glass bottom catamaran in key west and i do not recommend it. it was an awful experience. viewing windows really didn't accomadate number of people onboard, and if you got a spot at the railing you were pretty much stuck there.i thought being a catamaran it would be open but this was not the case the area where the viewing windows were was closed in with a small area in front and back.we were there in early sept. and it was HOT! several people were feeling ill my dd and my dad among them i felt it was a very long time to be out in those temps with no breeze and no shade.if i had been a better swimmer i would have jumped off and swam for shore. you may have a better experience but i don't think anyone on our excursion would go again.by the way there is no seating so be prepared to stand the entire hour to hour and a half and if you want refreshments you will pay for them ,can of soda $1.00.