How long are you there for? If it's all day, go to Atlantis in the evening. You can browse the aquarium and "digs" for free since there is no security then. Then you can go to the Blue Lagoon during the day.
Michelle, I was on the Atlantica in March, same itinerary, I can pretty much answer most of your questions, please click on Set2cruz at the top of my post. (in blue) My profile will come up and then you can click on my E-mail address and send me a list of your questions. I will try to answer them the best I can and also give you some excursion suggestions.
Post Edited (09-26-03 12:49)
Costa Atlantica, 3/23/03
Jewel, 2/1/10, RCI cancelled our cruise, (insert sound of sobbing)