My favorite wedding was when my grandma re-married and someone had made them a slideshow of how their lives were brought together twice (they were childhood sweethearts and met again after their spouses passed away) and it was really sweet.
The most memorable was when someone cut into the top part of a cousin's wedding cake bc they wanted an extra slice and WW3 broke out between the cousin's wife and the culprit. She threw a stack of napkins in his face and screamed like a 2 year old as people tried to tell her that the guy didn't know the sacred symbolism of the top layer and that there were still like 8 other slices left to freeze and it was just cake.