The Magic Kingdom will be transformed into a winter wonderland for Mickey’s Very Merry Christmas Party. Snow will magically fall on Main Street, Mickey and friends will be garbed in seasonal apparel, and Cinderella Castle will once again shimmer in ice with the indescribable Castle Dream Lights.
http://www.themouseforless.com/walt-disney-world/planning/events/mickeys-very-merry-christmas-party/