That is is exactly. It is EASY. There are taxis waiting there, we told them Comfort Suites and off we went. I am pretty sure we were in a van with other passengers on the way there but I am blanking that memory. I know for sure we were on the way back. I mention this because my DH and I feel safer with our daughter by being amongst other guests rather than just us in a taxi by ourselves. Anyway! They pull up, you walk in, complete the tranaction, and get your paperwork. The staff there is very use to guests doing the check-in/check-out scenario. My DH was a bit nervous thinking they were going to somehow challenge us or something. Instead, they direct you which way to go to get to the resort which is across the way. There is quite a bit of walking through Atlantis, in my opinion, to get to the desk where you turn in your papers to get the wristbands. I mention the long walk because you have young kids. Right after that, you will see many aquariums and amazing fish and beyond that are the pools and slides. When you are finished and ready to go back to the ship, you just walk out front and get a taxi van. I hope you are able to go for it!
My other tip is to be very careful in the lazy river which is not lazy at all. I am not sure what the attraction is called but there are large rapids and our tubes were rockin. Just try to read all you can before you go so uou know what to expect.
Finally, my opinion is that I am glad we went as we had always wanted to visit Atlantis, but it was NOT anywhere as pretty and sparkly as it looks on TV! And I was not impressed with the beach there. We had a very nice time, and I would consider going again. We actually used hotel points to get our room. So we essentially went for free. I am glad we did not pay almost $700 for our family of four.