My family always celebrates Christmas Eve at my mom's parents. We always eat sauerkraut, sausage, and zopf (swiss holiday bread). And we always act out the Nativity. This year, both of my girls got to be in the nativity.
Last year, Andrew took Penny home for bed before the Nativity, so this was her first time too. Andrew, who really dislikes dressing up, was a good sport and accepted a role as one of the wise men. Penny was a little angel, while Eloise, played baby Jesus.
Now, Eloise, on a good day, isn't very cooperative, and our visit to Utah made that even worse (She might have gotten the nickname "Little Horrible" while we were there..) so I warned Mary (played by my cousin, Jane) that she would probably be naughty, but she was so enthusiastic about Eloise playing baby Jesus that I let her. She did a remarkable job keeping her happy.