Personally, this one:
-The newlyweds had theoretically been together for 5 years but saw each other so little that they were almost strangers to each other.
-The bridegroom discovered only belatedly that the one he was going to marry was a spoiled child submissive to her mother.
-The groom wanted children and the bride said she would think about it, but still hadn't made up her mind on the wedding day.
-Everyone was originally supposed to sleep at a friend's house, who suddenly put the dishes in the big ones, but the mother of the bride decided on a whim that no, her daughter would not sleep in said house, although obviously without notifying the owners.
-3 people (the bride, her mother and a guest) ended up spending the night in the village hall. The mother slept glued to her daughter and the guest had to stay awake all night for lack of a place to lie down.
-During the feast, the guests were of different origins and gathered in homogeneous ethnic groups who stared at one another.
-The DJ only played Senegalese music, which obviously only appealed to guests of Senegalese origin.
-The mother of the bride has a disconcertingly fragile ego, preferring to refuse to answer a question rather than admit that she does not know.
It was at a county fair grounds, friend of my significant other so I didn't really know them. They had the ceremony in the arena where they show animals for judging during the fair. The brides dress and train got covered in dirt and sawdust. We all had to sit on bleachers, it was unfortunate and hot outside. They said some cheesy things to each other. Thought I was going to die of second hand embarrassment.
Reception was inside, no DJ, just a poorly chosen song mix. The meal was like a pot luck from the families. A few people ended up with food poisoning. I hardly ate anything and we left after an hour. I heard there was some trailer trash style drama between friends of the bride and friends if the groom after I left. This was 10 years ago, they're still together. It does seem happily but again, I don't know them well.