Genuinely interested in responses, this is not an AIBU where I think I'm absolutely right 
I don't like my XH and don't think he prioritises our child (though he's not awful and neglectful, more lazy)
We only have the one, and she's Y1 so we don't have nativity fatigue yet!
She didn't have a major part, but did have a song and dance with a subgroup of 12. It was only 45 minutes long.
I know loads of people miss them because of work.
So, he went drinking with his mates. A local group, but which meets for an all day session in another city about once every 6 months. So not the only time he can see them, but not on this kind of event all the time. If it makes a difference, 2 of the 6 are pretty flakey and drop out often from things, 1 wasn't there. So in my mind not massive deal to drop out.
It will have been arranged before he knew the nativity date - though not before he could have looked it up on line. He had 3 weeks in which to ask them to re-arrange as that's when I texted to ask if he wanted me to get morning or afternoon ticket (I had the form in school bag).
She was disappointed he wasn't there, though not upset - she accepted his lie that he had to work as a customer needed something and had been waiting a long time.
So if this was your husband and you loved him and he was a good dad (so none of my backstory!
)
Would you expect him to re-arrange or even cancel, and go?
The other guys are all fathers.
Ultimately, she didn't care more than fleeting disappointment and it is his loss not mine.
Am I being PFB / bitter over harsh ex?
or was that pretty poor from him?