I call bullshit. Lets see a real link.
I think most wedding guests in the 80's were too stoned to know where they were, let alone if a marriage would last.
From my own experience, this is true. I'm four for four in calling marriages that would never last while attending their weddings. Two of these were in the '80s. At all four weddings, guests were discussing how long the marriage would last during the reception. At one, some of us actually took bets. Tacky, I'll admit, but you could just see the train wreck ahead. I tried to intervene before the weddings in three of the cases but my friends (men) did not want to listen to me.
So if anyone out there is thinking about marriage, really listen to what your closest friends have to say. You might not like what you hear, but they can see things you can't!