We graze for most of the morning and evening, but we have a full-on Christmas dinner at lunchtime.
Since it's just the two of us, I buy a turkey roasting joint (usually Marks and Sparks) and we have it with roast and boiled veg, stuffing, pigs-in-blankets, and loads of gravy. Yum. After the roast I have a little single-serve Christmas pudding (DH doesn't eat it) with cream, and we get stuck into the fruit cake, chocolates, stollen cake, mince pies, mulled wine, mulled cider....I could go on....!
We usually have a bottle of fizzy wine for with Christmas dinner, but this year I'm hoping I won't be drinking!