MAIN MEALS: In advance of the holiday make lots of stews and casseroles in your slow cooker and freeze them, then you can whistle them out of the freezer, place in the oven with potatoes for baking or risotto (use recipe a la Lazigirl but without the added protein) or cook pasta. Followed by Christmas pudding, cake, mince pies, ice cream, cheese and biscuits, anything that provides a pudding without effort
SECOND MEAL: Lots of salad veg, salads, cold turkey, ham, salmon, pizza, pork pie, or whatever, cheese and bread, put it on the side in the kitchen or on a table and let people serve themselves when they want it.
BREAKFAST Show your guests where the bread, cereals, milk, fruit juice, spreads coffee and tea makings are and leave them to sort their own breakfasts.
Been doing this for years as I regularly have up to seven people staying for a week to ten days at Christmas and I far too selfish to make myself a domestic slave at Christmas.