Hi Richard
We too are going to WDW this Christmas, well we will arrive there on Boxing Day but I'm sure it will still feel Christmassy! We are staying at the Dolphin for 15 nights
IOA will have a Grinchmas event, which sounds brilliant, it has been on for the last 2 years and had some good reports on the DIS Universal Boards, if you do a search for Grinchmas you will find them - there are some good photos in the posts - the Who's look fabulous if a little strange!
Magic Kingdom will have it's Christmas Parade until New Years Eve. They also have Mickey's Very Merry Christmas Party which you have to buy tickets for in advance. Deb Wills has a great information section on Holiday Events and Happenings on her site at
www.wdwig.com
At MGM will be the Osborne Lights which look spectacular, entry to the lights is included with park entry.
EPCOT has Holidays Around the World, with a santa in each pavilion relevant to that country, and also Candlelight Processional in the evenings which is included in the park ticket price, but you can prebook a Dinner Package if you want, info on this also on wdwig.
I believe there will be a special character breakfast at Animal Kingdom at Restaurantasausus 'Deck the Halls with Donald' which Santa Goofy will attend.
I have done lots of research as we were meant to go last year but we had to cancel due to my foot problems, so if you have any specific questions fire away and I will try to help.
If you are making PS for restaurants you will need to start booking soon, especially if you are there Xmas Day and New Years Eve.
What dates are you going and where are you staying? I would love to hear your plans!