For those of you trying to get dining on American Thanksgiving day that hasn't been loaded yet call in to do so. We wanted Cal Grill for Nov 24th and I couldn't figure out why that day was whited out so I called and the CM indicated that it wasn't yet loaded into the online system because it was "special event dining". However she was able to access that day and book the time we wanted.
That's how I got Tusker House! It would not show anything past breakfast on the site but when I called I wistfully mentioned that we'd really like it for Thanksgiving Day dinner but we'd take BOMA if it wasn't available and she said - oh I have it right here. So yeah - this makes total sense to me!