I don't know what's in the MVMCP, but during the Christmas season, Disneyland has the following:
Starting some time in November:
* Christmas decorations go up
* Haunted Mansion is themed to Nightmare Before Christmas
* It's a Small World has Chrismtas theme, plus the decorations are outstanding -- think lots of lights
* Decorate cookies - Main Street & at New Orleans Square
* Dickens carolers & lighting of the Christmas tree
* Christmas themed fireworks with snow falling afterwards
Beginning on Thanksgiving:
* Christmas parade - twice a day
First or Second Weekend in December
* Candlelight Processional. (In the past, at Fantasyland Theater, you had to get in line at the DL entrance to get tickets for the show. They passed out tix @ 8am, but when I went, I got in line @ 5am and there were already a lot of people there. Unless you're a VIP guest, there's no other way to get the tickets.) It will be interesting to see how they do it this time