http://www.randalolson.com/2014/10/10/what-makes-for-a-stable-marriage/

Interesting points: 3+ years before proposal is ideal (incidentally, I've read elsewhere that IPV is lowest in relationships over 3 years, probably because people don't stay in shitty relationships unless married or with kids).

Higher income decreases odds of divorce - unsurprising, the more you make the less she can upgrade.

The part about the less you spend on the wedding the more it's likely to last ties to the idea that some women just want the wedding. If she's satisfied with a cheap wedding, then it's the marriage she's interested in.

I'm curious how you'd invite 200 people to a wedding and not spend over $5K on it. I'm also curious if the high number of wedding guests would provide some kind of social pressure to not divorce.