It took me a while to recognise that we are a neurodivergent household, not a family with an autistic child and it has been an incredible paradigm shift. The apple doesn’t fall far from the tree and in all probability if there’s a diagnosed child, at least one dp has traits, and other dc may be functioning below the radar. Being NT in a ND family is another set of needs.
We each have things that are important to each other, and we all share the responsibility to try and meet some of each others needs, and not overwhelm or dysregulate each other. Everyone has different capacities.
In general I try hard to foster an atmosphere of listening with understanding so that everyone can express their needs and struggles, and we try to muddle along harmoniously.
For Christmas we have dropped expectations of everyone doing things together and instead we opt in and out. It works so well for us. One person’s enjoyment is another person’s challenge to be supportive.
For my autistic teen, we have no surprises - he enjoys gifts much more if he knows what is in each one. And he is better equipped to be gracious if he isn’t trying to process too much on the spot. Dinner is served buffet style with his normal food as one of the options so he can take part without the sensory stress of strange food. He can retreat as and when he needs to. He builds Lego in the kitchen beside me as I cook. We go for a walk to regulate, before things get difficult.
My other dc loves going to all the things and had a full social calendar for September, going to things with me, dh, gps and friends. She loves surprises, snuggling for movies, Christmas baking, shopping, all the food.
It’s perfectly to possible to facilitate both types of Christmas. And it’s lovely, even if it’s not always conventional.