DD turned 1 on Boxing Day.
We stayed at home (so 2.5 hours from family) and enjoyed a nice relaxed day with (only 1!) proper turkey dinner.
(Backstory - DPs and DPILs live 20 mins from each other, 1 serves at lunch, the other at dinnertime, and even when it is all agreed in advance where we are "eating" that year, the other gives us "a taste" which is a loaded plate so it's always a 2 dinner year when we travel!)
We went in to the kitchen for breakfast first when we got up, and only then went in to the sitting room to turn on the lights on the tree. We had put a rug over the presents, so it was a complete surprise for DD. Who was very confused. But happy to explore the (little) pile.
We went to mass as normal after that, and visited the 3 sets of extended family that we always visited whenever we stayed "up" (i.e. in our own house) - cup of tea or soft drink (or glass of wine for non-driver in 1) and a mince pie in each. DD devoured anything she was given (lots of biscuits!).
Home, give DD some solid food. Get turkey in oven, light the fire, open presents together. Finish cooking, eat main course, get DD to bed. Relax over cheese and pudding. Go to bed, and prepare for the onslaught of visitors for her first birthday next day.
Things we did that have stuck were DD lighting the Christmas Candle on Christmas Eve (youngest in the house does it), and putting out her stocking.
She had already made cookies for crèche, and we made cookies for Santa on Christmas Eve afternoon. (We did a reasonable amount of baking together already - DD could stir together flour and baking powder in sieve, whisk eggs with a fork, and squish dough (no longer for human consumption bits) between her fists! But stood on her stool at the end of the worktop, wearing an apron, and being part of the action).
I bought a copy of "Twas the night before Christmas" and read it as a bedtime story that first Christmas Eve, and have done every year since (she asked for it last year, about to turn 12!).
New pjs for bedtime on Christmas Eve only happened the following year, but that is also an important part for us.