Best in the area
Atlantis is one of those places some people will love and some people will hate. It's way over the top for the area and nothing else compares in terms of the physical appearance and features of the club. If you're trying to penny pinch, I would probably avoid this place as you're going to wind up hating it. If you aren't frugal and want to have a great time, this is the place to go. Drinks are relatively cheap (if you're a Chicago person) at 6-10 bucks a piece. Keep a tab open and you can drink all night with some dancers for around $100-200 bucks. You'll have company the entire time and even if you don't wind up getting any dances, it's still a nice place to listen to some good music, chat it up with some great looking ladies and have a nice time with friends. If you're able to get up into the VIP area, your time will be infinitely better. It's a little more private, you have your own dedicated bartender and bar and the hosts on duty will bring girls right to you.
In terms of the dances, like most places, your luck will vary. Anything is possible with the right girl and you can get extras in the regular $30 dance area, but don't expect anything too crazy. If you go into the private room area, depending on the dancer, you can have whatever you'd like. If you're sitting up in VIP or if you tell one of the hosts that you're looking for some fun, they will direct you to the girls that are more open when in the private rooms so you don't waste your time and leave disappointed.
The things that sell this club for me is
1) The quality of girls. Little bit of something for everyone.
2) The staff. Bartenders are great and the hosts are very friendly and want you to have a nice time.
3) Drinks are good and cheap.
4) Environment is nice. Take some friends, don't worry about your pocket too much and just have a great time. If you're spending, literally anything you want, you can have. Control the music have private shows up in VIP, take multiple girls back for dances, it's all you. Enjoy.