For a lovely festive signature drink, you could copy the idea of my uncle (now an Episcopal Vicar, equivalent to a Bishop!). He buys a couple of bottles of freshly squeezed orange juice the day before, chills a couple of bottles of champagne, and for breakfast after each Mass (he has about 3 at least), serves all his visitors (and there are lots) with a brekkie (a bacon and sausages fry which his sister and her DH cooks) but Buck's Fizz which he makes himself.
Do you have roll out croisant mixtures? Ready made pastry that you just unroll from the tin, cut along the lines and roll up into individual croissants? You could prep them the night before, rolling them with some ham and cheese, or a few with a chocolate spread, and then just bake for a few minutes in the morning.
Scones can be made and frozen, when defrosted, just pop them into the oven for 5 minutes (or even microwave for 30 secoonds) for lovely hot yumminess.
I definitely love the idea of some fresh fruit on Christmas morning - whether as a juice or fruit salad or melon chunks or something like that. And citurs juice can be squeezed the night before, and salad or chunks made the day or even 2 before.
I don't know if you have the ultimate cheat over there, but I know a few who use them here for busy times, are the precooked bacon and sausages from the grocery store. Takes the pressure off (but you can always cook yourself the night before too). Pop into the oven for a while to reheat, with some uncooked halved tomatoes (cut side up), a dish of mushrooms, a tray of scones/muffins, croissants for reheating. Turn on the coffeepot, check the previously set table, take out chilled juice from fridge, turn on Christmas music (make some scrambled eggs if feeling relaxed - ignore if there are lots up already), and enjoy!!
