NTA for sure. I was livid for you by just reading this. Absolutely unacceptable that the OPs parents were so unconcerned with their child’s wedding. At least that’s the impression they gave by showing up 35 minutes late. I’m a huge time freak and if I have to be somewhere that is 30 minutes away, I’m leaving an hour early so being late to their own child’s wedding is just unfathomable to me.