Christmas is a great time to go to WDW and I have done it many times although it has been several years since we have done so, so some of my comments might not be relevent. A trip that time of year combines my two great loves...Christmas and Disney all into one!
All the parks are decorated beautifully. We typically went the week right after Thanksgiving and crowds were minimal then with walk ons for just about everything. IT might be different these days and for the dates you specified. Temps ranged from highs in the 80's and low's in the 60's a couple of years to highs in the 50's and low's in the 30's another. Let me tell you that that was one chilly night seeing Illuminations with a breeze off the WS lagoon!
The thing I think most everyone will recommend is of course, MVMCP. A hard ticket event and truly a lot of fun. I am sure there are many that can give you more up to date descriptions than I.
Don't forget about the Candlelight Processional at Epcot, if you can still get tickets. Truly wonderful. And I am not sure if they do this any longer and think I read somewhere that they don't, but we saw the tree lighting ceremonies at some of the parks each night. There was one at the Studios with the streetmosphere characters that was a lot of fun.
One of the saddest things to me is that they no longer have the Jolly Holidays Dinner Show at the Contemporary Resort. We went many years to see that and had a ball every time. It was a dinner show with Turkey, dressing, ham, sweet potatoes etc....and a story of Christmas events with the characters, dancers etc. Much of it was repeated on the Castle stage at MVMCP but the show was always a sellout so I am not really sure why they stopped. As an aside, I just recently bought a machine that allowed me to transfer tape video to DVD and watched the show that I taped when we took my Dad with us, the year before he died. He LOVED Christmas and this was right up his alley...sniff.
One last thing, if you have some time or if you want to make some dining reservations outside of the parks, make sure you visit some of the resorts. Each is distinct and themed to the resort and some are quite lovely.
Have a great time! You will LOVE it! I am sure there are many that will be able to help you out with more up to date info and correct any of my inaccuracies. :xmas:
