TL;DR - they are rude to vendors (caterer, venue, photographer, DJ)

I was a wedding DJ for over 10 years and I’ll tell you one thing…if one of them is shitty to either you or another vendor they don’t seem to last. Loudly complaining about the catering staff or venue, photographer or DJ, being shitty to people in general. Making it through your wedding day without being an asshole is easier than marriage in my humble opinion. Being nice to other human beings, kind and patient seems to be a sign it WILL last…

One comes to mind, one of the few Mormon receptions I’ve ever done. Bride was pissed the dance floor wasn’t filled when “Thriller” was played. They didn’t serve a meal (only snacks), no alcohol and most of the people there were not invited to the ceremony since it’s at the temple thing where non-Mormons are not allowed. Those things make for an awkward event and of course most people did not dance or have a good time in general. Her family couldn’t stand her but paid for everything. She spent most of the reception bitching about different vendors (photog, food, me). Husband apologized saying she is “just being s butthead.” She is probably the only Mormon person I have ever seen be rude to other people. No way they stayed married.

I would be surprised if many bridezillas or douchegrooms stayed married.

Other couples come to mind where different things went horribly wrong, responsible party apologizing profusely, certain they have a one star review or other consequences coming (if you’ve ever seen online wars between brides and vendors, or going to court over a debacle, that’s what I mean)…coupled brush it off and laugh and have fun, say thank you…yeah they stay married.