1940s/50s. Pillowcase full of presents at the end of the bed. One big main present. My DM had five brothers and sisters who took it in turns to host three days over Christmas.
If not our turn, arrived Christmas Eve to a big buffet. Christmas Day, women cooked Christmas lunch for children and men and then men cooked it for the women. Bedtime meant as many children who could fit into a bed - top to tail, people brought mattresses which were laid down all round the house.
Drank Babycham, if old enough, played cards, music, danced, played games, charades etc. My DM never drank alcohol and I member once she was given a a Tom Collins cocktail (gin, lemon juice and soda) which she assumed was non alcoholic, after which she collapsed back in her sear with a handkerchief over her face and announced herself to be positively possed. 😃
We got up the next morning, and repeat. Happy days.