You don’t say how close you live to each other and whether or not staying over is involved.
Oh the emotions baggage connected with Christmas. Why do we put ourselves through it?
I could live happily with them alternating between us and their in-laws although with 3 the logistics get complicated. For a big family “bash” Boxing Day is the easier option. When ours were small I used to stick to the principle that children should open their stockings in their own home too.
Now that I am on my own it remains to be seen whether I will be as reasonable, but Christmas Day with one of my 3 DDs and seeing everybody on Boxing Day should be OK for me.