We have two families over for a "friends" annual Christmas dinner and there are only about 9 of us. I do this annually on the second Saturday evening of December. We eat, talk, and take photos by the tree (yes, more photos I add to my "have to scrap" pile). I try to keep a tradition going.
We celebrate Christmas Eve with my DH's immediate family usually at my BIL/SIL's house and then my MIL or my DH's aunt does Christmas day with the larger family (aunts, uncles, cousin's and all the cousin's kids and their kids - getting quite large with the kiddies). I've done Christmas eve but never Christmas day - way too many people for our house.
How about the rest of you?