Just booked my trip to Battle 4 Atlantis.
http://www.atlantisbahamas.com/b4a/dayton
There is an issue if you want to check in early, as the promotion goes back only to Monday the 19th.
We wanted to check in on Sunday the 18th.
Here is the link you will need to then add in and refresh on your browser if you want to check in the 18th or earlier:
https://secure.atlantisbahamas.com/travel/arc.cfm
BUT make sure to go to the top link first - so you will see Dayton listed next to the hotel rooms.
Hope to see some of you in the Bahamas.