There are an awful lot of people on this thread with no concept that other people’s parents may not be like their own parents.
My parents were always “visitors” because they chose to act like visitors. Turn up, sit on sofa, wait for refreshments to be brought, expect grandchildren to be paraded in front of them, expect to be entertained.
I think you’ve hit the nail on the head here.
If you’re fortunate enough to have both parents and PIL who can come and not change the dynamic - then that’s great and there’s no real reason to not let them come.
But if you’ve got ones that do change the dynamics, then I can completely see why you’d not want you or your child’s experience affected, just to please someone else.
You can’t invite one set of parents without the other.
So that’s 4 extra adults which is more than likely going to impact the dynamics in some way.
I can imagine the ones that will have the greatest impact on the dynamic of Christmas Day, are also the ones that are pushing their way into coming to Christmas morning for the ‘magic’.
As those who are more easy going would probably have already been invited.