DC get stockings ridiculously early.
We get up at about 8.30. Have naive breakfast, get showered, dressed, hair etc.
Everyone (grownup) gets a glass of Buck's Fizz, DC have squash with fizzy water.
Open presents from under the tree, going youngest - oldest, taking it in turns, one present each as it makes it last longer!
ILs come over. Canapés and more fizz circulate, do gifts with them. They keep DC occupied, DH and I get on with dinner.
Sit down to eat at about 4pm. Starter, main course. Clear up, do first load of dishwashing.
Play a board game at the table (Carcassonne / Exploding Kittens / Cluedo).
Pudding and cheese. Un/reload the dishwasher.
DC go into living room to play with toys/electronic items. Some of us stay at kitchen table to play board games or cards (this is often when Trivial Pursuit comes out).
Quality street/stollen/lebkuchen/more cheese etc do the rounds. More board games/reading new books/playing new games. People go to bed as and when they get tired!