Is there enough time to do the Atlantis Aquaventure if our ship is in port from 7am - 1pm?  Also do you take a tender to get off ship and how long does it take to get to Atlantis from the ship?  Any help would be sooooo appreciated.

I would say not worth it.  The Aquaventure doesn't open until 10:00 and you are supposed to be on the ship no  more than 30 minutes before leaving port.  You need about 30 minutes to get to the port from Atlantis via taxi with traffic and it is a few minute walk down the pier and you have to show the Bahamian offical your docs and such before getting on the pier so that can be a line.  I would say you would have to leave Atlantis no later than 12:00 which means by the time you walk from the slides to the hotel and get a cab you would need a half hour so you would only get about an hour and a half on the slides...