For the family, we all come home after Midnight Mass and "slide" the port with a huge piece of Stilton cheese and some toasted and spiced pecans. This started about 20 years ago when we had our older daughter's godfather with us for Christmas, he'd brought some port, and I got the cheeses. We talked about "old" times. It has continued and our daughters and the son-in-law, now join us and we chat about all kinds of stuff.
Earlier in the evening, we have friends that have Christmas Eve open houses, they prepare a huge buffets of food, venison, duck, oysters, you name it--and some Christmas cheer, my favorite Dewars on the rocks, and a cup of high test egg nog. Lots of other friends show up and these places and it's really nice to see them, particularly thoses who relocated out of New Orleans after Katrina but return to town for the holidays. It's a big reconnection party. Then we head to Midnight Mass, it's a lovely service, then home.