Coffee on, oven on, tree lights on, DD allowed in to open stocking.
Once that has been upended and explored, all back to the kitchen where pastries go into the oven and juice is squeezed, radio turned on at some point (first thing or whenever we remember!). More coffee made and breakfast enjoyed. That tends to be a relatively relaxed affair, and DD may head off to do something with a new toy/activity, or may just sit and chat with us.
Clean up, showers and nice clothes, out to mass (usually 11am, occasionally 12 noon).
Couple of extended-family "drink and mince pie" visits en route home (we used to call home before the last one to turn on turkey, but now don't have that final one to do, I go to the cemetary another time in December instead).
Home early afternoon, turn on music again and tree lights, turn on oven, throw in some M&S nibbles, get stuffing in turkeys' bum, chuck that in the oven, get fire and candles lit, organise kitchen so it's just throwing things into the oven at various points (we have prepped things on 24th like peeling potatoes and veg, making stuffing, making flavoured butter etc), take out nibbles, open drinks, head to sitting room to open presents with drinks and nibbles.
Various interludes of someone wandering into the kitchen to baste turkey or throw something else into the oven, or refresh glasses. Eventually this includes setting the table etc too. We might also have the tv on once presents are finished, or just enjoy the music and fire and chat.
We tend to aim to eat the turkey about 6 or so.