I'm still in the midst of developing a 'new' Festive routine really, having moved a long way around the time of the lockdowns to be nearer my aging parents and help them out as they're both struggling physically.
So much of what would have been my old routine (in terms of people to visit) has changed - although, as it's moved me much closer to my parents and my older brother and his family, then there's still going to be a lot of the same people around on Christmas Day - just a lot less of a novelty seeing them now as I see them most days anyway.
I still get the house decorations, and slightly later the tree, up nice and early and enjoy them for as long as possible. Having (a Vegetarian) Christmas Dinner with my parents and brother is still a big part of it - as first me, then my brother, and later my mum, have been vegetarian for a number of years. Though as I've now taken over preparing the dinner for everyone, that gives the day itself a more busy, stressed feel for me.
I'm trying to think of anything I generally watch / read / listen to specifically as a Christmas tradition. But I'm pretty much a boring, stuck in their ways person who watches / reads / listens to a lot of the same stuff on a regular basis all through the year anyway - so I guess I'm just boring and predictable all year round, not just at Christmas.