Must-Sees:
Resort Decorations: Grand Floridian, Contemporary, Wilderness Lodge/Fort Wilderness, BoardWalk Villas, Yacht & Beach Club.
I like to do a "monorail tour" and see the three resorts (even though Poly is less decorated and under construction.)
It's also fun to eat around the world. The EPCOT World Showcase features a decent amount of holiday-themed food from each country. They have little passports that list all of the treats. It's not like the food and wine festival - but it's pretty cool.
For more info, check out my free Christmas guide at survivedisxmas.com!