It's situations like this that make me grateful it's just myself and the dcs at Christmas. They'd be happy with grilled cheese and tomato soup on Christmas Day, but are quite happy to have whatever is made for food.
It's usually:
Christmas Eve: takeaway
, wine for me in the evening (while wrapping various gifts)
Christmas Day breakfast as usual, cereal, toast, if I can wrangle the dcs into sitting at the table long enough.
Christmas Dinner is usually turkey, roast potatoes, corn, green beans, yorkshire puddings (which the dcs would eat with every meal if they could). Pudding of either pumpkin pie or fruitcake later in the afternoon.
Christmas Supper is leftovers.
Boxing Day breakfast as usual, dinner is leftovers, and supper is usually something simple like frozen pizza or fish and chips (because by then we want a break from leftovers
).
Very laid back at our house.
That being said, my extended family has always been relatively flexible over Christmas meals, but it's always been a situation that every adult is expected to help out so nobody is stuck in the kitchen all day, and each family group coming is expected to contribute to part of the meal (pudding, cut up veg/salad and dip/dressing, bread rolls, and so on). Sort of a "pot luck" situation.