Hi CPSTX, welcome to Cruise-Chat! 417rogers you are one lucky man!
CPSTX, it's up to you, but I totally agree with SonnyV. You can do Atlantis on your own for a lot less. However, if the water slides are important to you, then $165/pp is not a horrible price. They do have a website, and I seem to recall $85 for aquarium/lagoon access. Something like that. Just google, Atlantis Paradise Island, Bahamas. It'll pull up their site. Are you on the same cruise that 417rogers is on?
Wishing both of you a fantastic cruise!