Decor, Christmas tree, special shows on Triwizard stage, I believe holiday food and drink as well.
With the comments your making, it's making me wonder if they may re-brand the Holiday offerings this year to not just be focused on Grinchmas?
Would it be fine if I start somewhat of a speculation thread for this, as it could be rather interesting (and that the OU Forums did have one back in the day's before the Merging of a Holiday refresher on Orlando's turf).