I feel like I'm in some parallel universe on MN sometimes. Why are we all desperate for cool wife points.
Why should op have to minimise how she feels, not choose this hill to die on, not make him choose etc and being criticised for not modelling healthy relationships because she's been upset and ignored him for two days!.
I can completely see why she's been crying. None of this is her making, she made plans with him 6 months ago with friends and their families and DH agreed.
DH then books something either accidentally which shows he has zero consideration towards them as a family, or more than likely went along with majority vote and didn't want to miss out so pretended to forget, hoping Op would breezily go "no problems I'll take the kids on my own". When she didn't, instead of sorting it, he blamed Op and turned it on her. How is this her choosing a hill to die on, if anyone is it's him. He's choosing to prioritise his mates holiday over his wife and family. He's choosing the bloody hill, and Op is reacting accordingly. And if people want Op to model healthy relationships maybe looking more closely at his behaviour rather than expecting Op to put up and shut up.
He should be apologising, looking into how he can fix it, cancel or whatever and instead he's whining about op being a big meany and not wanting him to go away because he wants his own way and is deflecting as it didn't go how he wanted it to.
It's not about whether op can take three kids on her own to a festival. I'm sure she can. It's about him completely disregarding her, blaming her and then ignoring the fall out rather than apologise and sort it. And whether he likes that or not, that will carry an impact into his marriage, because that's not easy to come back from. And he's choosing that. Not Op. I'm sure if he'd have said "oh bloody hell, is it ok if I get back Friday night for it and meet you there" Op would have eyerolled and got on with it.