I have two:
I was maid of honor at my cousin’s wedding. The reception was held in the basement of the church, and no music was allowed (bible belt Baptist church). It was the deadest party I’d ever seen. Apparently, the groom agreed. He left after half an hour and went home to watch a football game, leaving the bride (my cousin) to manage the reception by herself for another four hours. I felt sure that marriage wouldn’t last, and it didn’t.
The other was the wedding of close friends, not big church goers, who had basically picked a church at random, and knew nothing about the minister. Unbeknownst to them, he had a little ‘surprise’ planned.
He was a “fire and brimstone/tent revival” type of Baptist preacher… very enthusiastic. During the ceremony, he said that the greatest wedding gift we could give our friends was to open our hearts to Jesus and asked if anyone wanted to do so that very moment. “Raise your hand now if you want to be born again!!!” crickets “Anybody?” crickets “Come on, now! Come on!” crickets ”No one at all?!?” absolute silence It was the most uncomfortable few minutes you could imagine.
Clearing his throat, he finally continued on with the ceremony. We were all mortified, including the bride and groom.