Christmas Eve. DD comes to work with me in the morning, we meet DH (who has been for a nice relaxing breakfast alone - although his company changed rules last year to 24th being a working day too now) to buy DD's birthday cake in M&S, and any other nibbles or other bits we need. Then we get family lunch.
Head home, peel potatoes and prep veg, DD bakes cookies for Santa (either from scratch if we have time and energy, or slices from a half batch in the freezer from earlier in the month if not - I ALWAYS make sure to keep enough for 5/6 cookies in the freezer in December!!).
We try and get a nice walk either up the hill or on the pier if the weather is ok. I usually still have wrapping to do too.
Smorgasbord type dinner of nice nibbly bits (cooked and cured meats, prawns, smoked salmon, cheese, cherry tomatoes, olives, nice breadsticks or crackers or crusty bread, maybe some pate etc).
Candle ceremony, hamper, stockings out. DD goes for her bath (she and I get a Lush bath bomb in the hamper) and new pjs. Hot chocolate to drink, read "Twas the night before Christmas" in bed, and maybe another story. Then hopefully collapse and relax a bit.
Or, if we're travelling, work in the morning, buy what we need in M&S, including picnic bits, drive 3 hours, aim to avoid the worst traffic and also to get past the worst services before we need to stop, visit both DPs and DMIL before getting to wherever we're staying (we generally rent a cottage if travelling for Christmas - either DM or DMIL or both may have a pile of jobs needing doing by us before we leave), unpack, food, candle (and maybe a few decorations), stockings, bath, bed, collapse.