One resort not to miss is the Grand Floridian. When visiting MK it is not that bad to take the monorail up and back from this resort. In addition to the resort decorations there is a piano player playing holiday music. Also, there is an orchestra that plays holiday music, too. They have a Santa, too in the lobby. Their ginger bread house is full size and has hidden mickeys to find.
Enjoy a meal at the resort; our favorite is Narcossee's. You can time your meal with the MK fireworks and you will be able to see the fireworks from afar from this restaurant. There is a pier view, too near the restaurant.
AK has a special holiday parade. Also, their character meet and greets are special with the holiday spirit. MK has the Christmas party which you have to pay extra for. Main St. In MK will have snow falling. The castle lights are beautiful. Hollywood Studios has Osborne lights. Epcot is my favorite with the World Showcase and Candlelight Processional. For the Candlelight Processional you can get a dinner package that gives you reserved seating. It can be tough getting into the show without the package.
You can u-tube a lot of these events and get a little taste of what all this is about.
This has been my favorite time of year for many years. You do need to be prepared for colder weather.