[Sundae]

Ali, he's a shithead.
It doesn't look as if Mav and Aden had any confusion about the dates, so it's all down to him.

You were prepared to allow your boys to visit a man who has not stepped up to the parenting mark on the most precious family season (in the West). Good on you. If he screws this up he will have even more bridges to build.

I dunno about his side of things.
I admit I can micromanage and hyper-organise, so it might be he would always look like the villain to me.
But changing plans with two weeks notice - especially at Christmas - is dicking about in my book.