Tidy up, walk the dog on the beach, have a coffee out, maybe see a friend if they're around, probably prep some veg or other food.
In the afternoon play a few games (Carcassonne, Virus, Jenga) with some hot chocolate, wine, panettone or something.
Later on, we set off NORAD tracker, put on Muppets Christmas Carol, then hang stockings and read a FC story to DS and lights out. We've never left out drink and a mince pie.
No last minute wrapping because I hate last minute wrapping. We'll clean the kitchen and lay out the stuff for breakfast and set the table.
I write a note to DS from FC saying how he's been a good boy and he hopes DS likes his presents. Rudolph and our dog get up to some high jinks - one year they went running on the beach and FC couldn't fly off
they might play Fortnite on the PS this year!