For most of my married life Christmas has included nuclear family plus members of the generation above, parents, in laws, aunts & uncles, friends, whoever needed a home for Christmas. But as time moves on the older ones have died and numbers began to shrink. At which point DS married and Christmas expanded to include DDiL's family, mother, sister and partner. Now DS & DDiL have children and SiL has a partner who needs to stay at home to see his children so DS & family alternate Christmases, one year at home with other Grandma and the next year with us. As a result the year they stay at home there are now only three of us in our home, us and DD. The smallest (in number) Christmases I have ever experienced.
I am not unhappy about this, we have had one Christmas like this and will have another one again this year. We will see the others next weekend and again on 28 December. It is just that I am experiencing a new version of Christmas, the same but differerent and it takes a while for it to feel as normal as all the other bigger Christmases.