Now that my son and daughter have their own families we all ( me, their Mom, their step dad)gather on Christmas Eve (this year at my daughters since she is VERY pregnant). Everybody brings food and we cook together. We put on a good old feast, sing carols badly, give little presents, and make very merry.
This way they are free to spend Christmas Day first with their SOs then with their social circle.
I have Christmas Day dinner with my oldest friend
and continue making merry!.