Christmas is always a bit problematic for me. For one thing, I'm Jewish, so the whole religious aspect is kind of lost on me. On the other hand, JD is not Jewish, so every year I ask him if he wants to decorate the house for the holidays, and every year, I get the 'look', so it's never necessary to do anything but display the holiday cards.
However, December 25th is my sister's birthday, and she LOVES everything about Christmas. Every year she decorates the whole house - multiple beautifully decorated trees, every David Winter cottage ever made, plus other cute cottage and village collections, plus, plus, plus. It's an ocean of cuteness.
Oh, and the Christmas/Birthday party. It used to be huge; my sis would invite every person she knew - family, friends, business associates. Most of Los Angeles, I think. As the years have gone by, the party has gotten smaller; now it's mainly family. And the family has gotten smaller, too.