I asked in early September if I could have our child this weekend, which is my ex's normal weekend. Ex is due to have our child for Christmas.
Ex immediately said yes. I arranged a big family event for tomorrow for lots of family who are travelling from far and wide.
I picked our child up early from school today for special family stuff. Ex called at school closing time in a rage asking where I have taken our child (apparently after finding out child wasn't there) and when I explained that we made this arrangement, demanded to know why I hadn't sent a reminder.
Evidently ex has made loads of plans. Even though ex has our child for Christmas, they were planning for tomorrow to be their big Christmas event (??). Many people have gone out of their way to attend at great expense.
Our child can't possibly attend both events as they are at exactly the same time.
AIBU to tell ex tough luck?