I just spoke with Disney, and clarified a few things. The first day that it is open to AP holders and the gen. public is 12/3. It sounds like you have to purchase a dinner pkg now to be able to get in, and so I'm hoping that this in addition to the fact that they extended it to 20 performances will cut down on the congestion and waiting time.
I'm so excited, it sounds like it will be a wonderful thing! She said the pkgs won't be available to book until next month sometime. I've never seen the castle all lit up or the overlay of HM, so that will be so much fun!! The last time I was there during the holidays was in Nov. 1999. California Adventure wasn't even there! I've been since then, just not during the holidays. We normally go at the end of May/June.