I dont think I have replied here before!
Here in Norway we start with going out to the forest to pick out a tree to cut down in mid december, my uncle has a forest so we usually find one there. A couple of weeks before we take it in. We never ever put up and decorate the christmas tree before the 23rd of december, and its usually involving a lot of arguing over the lights that always is in a tangle. Here we celebrate on the evening of the 24th, so we always come together since we are a small family and are around 12-15 persons. On christmas eve we always always eat the same thing: rack of lamb ribs (doesnt sound good, but can promise its yummy!) with potatoes and a mash of root vegetables. Thats one tradition we keep here, for dessert we have rice pudding, in which we put an almond in, and whoever get the almond gets a marzipan pig. And since my family is sneaky, no one ever says I got the almond first, we are usually on the second portion before someone admits to get it.
After that we open presents, and at midnight mum likes to watch the pope and we end christmaseve around 1 am ish.
And thats the short version of how I do it!