We cruised the 4 day Wonder on 5/12, and did Atlantis through the Comfort Suites hotel for $154 (with taxes and fees it came to around $180). We checked in around 10am, no problem. Checked back out around 5pm. My advice would be to tell them right away that you will not be coming back to check out and to mail you a bill. It was a pain in the rear to hike all the way back there after a long, hot day. Atlantis was absolutely beautiful, the waterslides were a blast, the pools were pristine and the aquarium looked great. Didn't do the casino, but walked through and it looked very nice. We paid $4 pp each way for taxi, and we skipped lunch and brought snacks. Overall, it cost about $220 for the day. It was very fun, and basically the only thing that we wanted to do rather than stay on this ship, but still on the expensive side for 8 hours worth of fun. Enjoy!! -Sue