If you don't want to do the 'usual' stuff then don't. It can be a bit tiresome after so many years of doing something. After 15 years of spending most of Christmas morning in the kitchen, (prepping and cooking,) and half of the afternoon in the kitchen, (cleaning up!) AND prepping stuff on Christmas Eve: I announced to DH and the kids that I am not doing ANYthing on Christmas day any longer. (Or Christmas Eve!)
I said 'We will have 'Christmas dinner' on the 23rd, in the early evening, and a bottle of wine etc, and then chill and play games and watch films on Christmas Eve, and then lie in on Christmas day, and get up at 10am, and have some toast for brekkie and then eat random buffet stuff for lunch, and then maybe have some Christmas cake and loads of other shit for dinner later on.'
That was it really. It wasn't up for discussion. If anyone wanted Christmas dinner on Christmas day (or eve,) they were welcome to do it. I was doing fuck-all on those 2 days.
Don't get me wrong; I loved looking after my DH and kids, and didn't mind 'doing Christmas' for 10-12 years or so, but for the last 3-4 years or doing it, I started to get a bit fed up of spending half of Christmas day in the kitchen. Yeah I know I could have delegated or asked for help etc, but I guess I just got on with it as it became a kind of habit.
Anyhoo, DH and the kids were fine with it after all! But the OP @tigercub50 is not being unreasonable to want to change what she does, and just chill or whatever....