So I am guessing while your parents are there, there’s going to be quite a bit of tension? While DM is not supportive of you and that impacts you, it’s likely there’s an impact on everyone else as well.
I appreciate you wanting to build to bridges with your parents, but that doesn’t mean that everyone else will be looking forward to them being there. Or the resulting issues it will create.
But also, now you have made the decision you are all going to your brothers and not happy because everyone else isn’t on board either.
It does come across as a little bit like you are centring you, your parents and your brother and ignoring how everyone feels and annoyed they won’t just go along with it. It seems not everyone wants to spend this time with your family, perhaps due to the difficulties in your relationship.
Your dh and kids must have a reason they don’t want to go to your brothers. I am guessing your dd has said why she isn’t happy about your parents coming. Even if you don’t agree with them, they will have said it. Even if it’s that last years Christmas was far better and enjoyable without them last year. But you aren’t really saying. Surely your DH gets input on Christmas plans?
DH has for 18 years dictated we will always stay home at xmas. I guess I am sick of ignoring my own wishes