Ive just read that seaworld are going to have special christmas shows although it doesnt say what
I think I know some of the things that disney do like the christmas party but what are some other great things that happen around christmas
Sometimes there are special food and beverage offerings too. We've seen a gingerbread house in the USA pavilion out of which they sell cookies and cider and hot chocolate. It's not there every year apparently, but it's fun when it is.
There is the Gingerbread house in the Grand Floridian where they sell smaller versions of the house and other treats.
One thing to keep in mind too is that there are usually free Christmas related entertainment shows at DTD. Often they are choirs, or carolers or the like, but they can help set the mood.
There is "snow" in DHS, and in Celebration.
Sometimes there are things like carriage/sled rides at a couple of the resorts. They are canceled though too, so be sure to check first before you set your heart on doing something like that.
There will be Christmas themed merchandise like drink cups, and clothes etc.
NYE sees a whole bunch of potentially different events too. Sometimes there are extra music acts in EPCOT, big screen showing Disney clips, that sort of stuff. It is JAMMED full of people all week, so be sure to plan what you want to do and get there early. It's not unheard of at all to have the parks close to new guests during this time (usually Christmas Day and NYE).
Oh, and Disney raises their food prices for full service dining for the high peak season.