I normally have to go into the office for a couple of hours and DD came with me, we met DH on the main shopping street nearby afterwards for coffee and sandwich lunch and to buy DD birthday cake in M&S before going home (Boing Day baby).
Nowadays, DH also has to work Christmas Eve (near home), and there is a Christmas Eve swim near home, so I take annual leave, and DD and I swim while DH holds towels, in between popping into the office for a few minutes. (The swim is followed by hot drinks - hot choc and mulled wine - before we leave the sailing club).
We usually have a few small bits, which we could do without, to pick up on our way home.
Once we get home, we prep the veg for 25th and leave them to soak in cold water, while DH makes his annual phonecall to DMIL to ask how to cook the sausage meat for the stuffing. DD still makes cookies for Santa - but I always have a spare half a batch in the freezer from an earlier session just in case we don't have the time or energy on 24th to start from flour and butter....just slice and bake instead.
We lay out a smorgasbord type buffet for dinner of cured meats, fish and shellfish, dips and vegetable sticks, olives, cheese, nice flatbreads and crackers etc - lots of nice nibbly bits that we enjoy and everyone can pick what they want.
After dinner, the youngest in the house lights the Christmas Candle (to show that there is "room in our Inn" - an Irish tradition) and we remember the highs and lows of the year just finishing, and say a prayer for those who are no longer with us.
DD then drags out the Christmas Eve Hamper - a cardboard box that normally holds decorations, that now has new PJs for everyone in the house, festive bath bombs, hot chocolate mix, DD's stocking, her old plastic Santa plate and glass, her Snowman covered hot water bottle, and the family edition of Twas the Night Before Christmas.
DD lays out her stocking, glass of milk, cookies and a carrot before she heads off for her glittery bath and into new PJs. She comes back down for her own hot chocolate, and then snuggles up in bed where we read the book together.
DH and I hopefully have no other jobs to get done, and just relax for an hour or 2 beside the fire, before also getting an early night to let the Man in Red arrive.