According to the ADR Calculator if your trip starts on 11/27/2008 which is Thanksgiving you can make your 180 day reservations for dining on May 31st ! So anything upto 10 days after 11/27/2008 you can make on May 31st if you have a longer stay that would require you to make ADR's for over the 10 day out mark you would have to call back but the CM will tell you when you can call back to do them! Hope this helps!