Just returned from a holiday which was my family, my parents, and DSis's family all together for the first time. DSis and I both have two young kids and ages are similar so we hoped they would hit it off but it was just extremely hard work from start to finish.
While I knew it wasn't going to be the most relaxing of times, the biggest issue was that DSis and I have completely contrasting parenting styles with her kids staying up most of the night, grazing on junk all day and one of her kids in particular pretty much bullied my DD all week. My kids were miserable whenever both families hung out together as DSis and her H just turn a blind eye to what their kids are up to and it was left to the rest of us to supervise most of the time. DH and I have pretty much vowed not to holiday with them again for a very long time, if ever.
I'm very happy with this, but now they are suggesting we repeat again at Christmas! We have no other family so it will be hard to make an excuse but we'd rather just be on our own than repeat all of that again!
AIBU to say we don't want to holiday together again, and if so how do I do it diplomatically?