This happened at the church I attended at the time. I wasn’t invited to the wedding, but knew a lot of people who were there.
Young couple, both of them pretty much gormless. Her family was wealthy, of the type where she was only vaguely aware of how things happened, because they had a staff. He was not wealthy, and her parents hated him. She insisted, much money was spent on a very elaborate ceremony and reception. Family and friends flew in from everywhere.
At the altar, the pastor said “Do you take this woman?” and the groom just stood there. The pastor repeated the question, and the groom said, “No.” Much consternation. The pastor took the couple back into the sacristy. The groom explained that he had come to the conclusion that he was called to the Catholic priesthood, so marriage was out of the question. (Everyone involved here was Lutheran, so this isn’t a typical career choice.)
Pastor came out and explained to everyone, leaves to go talk to the couple. Groom leaves, bride has a complete breakdown. Her family is loudly angry at the groom. Guests leave, after which it occurs to the bride’s family that they should have told everyone just to go to the reception. Much frantic phoning around, to try to salvage whatever possible of the very expensive feast. Groom’s family is angry at her family, who obviously care more about money than people. Words Are Exchanged. The pastor, hearing the commotion, comes back out and tells everyone to leave. He sends bride to a local counselor for support.
Counselor, who is, IMNSHO, an idiot (and has since been arrested for inappropriate sexual contact with minors, but that’s another story) calls the groom in to achieve closure. He explains to the groom that being an Episcopal priest is just like being a Catholic priest, except you can be married. (Remember that all these people are Lutheran, including the counselor, who is also ordained clergy.) This makes sense to the couple (remember, gormless), so he marries them right there, with a couple of random strangers as witnesses.
Both families disowned both of them, and the last I heard, they were struggling to make a go of it.