More great detail, thanks all!
Availability at Swan and Dolphin was minimal. BUT, I found it at swan for 11/14 - 11/19, on points (fifth night free too!). I figured I'd reserve while continuing to search for the princess experiences. So far, Nada! I have until 11/9 to cancel, so will continue to check for Cinderella and Ariel / little mermaid until then, knowing full well that it probably will Not become available. Worst case, we'll find another Warm destination for November / December and scrap Disney this year, and do it in Advance for 2016!