Thanks everyone. So, are you saying that it is only something that is part of the Mickey's Very Merry Christmas Party? We will be in the park during the day of the party too.
This is the stage show:
http://www.youtube.com/watch?v=FJc_1jSRCqg
No, its not part of the party. This happens every evening. The MVMCP doesn't start until 7:00. Day guests are supposed to leave the park by then, but are still around for the lighting at 6:00ish.