We were on the Wonder NYE cruise. Our friends did the Aqua Adventure and had a 9:30 meeting time. She said they didn't even leave the ship until 10:30 and so by the time they got to Atlantis and found some loungers it was closer to 11:15-11:30. We also did the Aqua Adventure, but had a cabana and they had us off the ship right after 9:30. I think we were in our cabana by 10:15. The buses seemed to be leaving as they filled up- I think they said every half hour. We left about 4 and got on a bus that was leaving. There was another bus right behind us waiting for the next group.