In NZ or I would be but for this fucking virus we do things like roast turkey, ham (hot or cold), roast vegetables, sprouts, beans, peas etc, all the usual British fare, with lots of cold salads and meats and seafood as well. We also have the full hot Christmas pudding, custard (hot or cold) along with trifle, ice cream, fruit salads, mince pies, and something called brandy snaps which I can't find here. Sob. 😢
There's lots of NZ wine, beer, some French champagne and soft drinks (all cold!) through the day - which is warm, so either windows and doors are open and/or food eaten outdoors, or all is closed up for the aircon to do its job!
Some also have a BBQ and visit the beach.
Also can't forget Pavlova ... which was invented by us Kiwis, and certainly not by Australia flat whites too. 😂