I ran a hobgoblin wedding in my Goblins of Eberron campaign. It's 4e, so naturally it was The Wedding Planning Skill Challenge!
There were invitations to deliver and prophecies related to potential guests, so that was important.
There were gifts for the wedding party.
The bride had been kidnapped (hey! It's goblins!), so the ceremony had to be defended.
The bride didn't want to be married and she was an expert at wedding traditions and decor so she kept adding in more and more outrageous demands.
The bardic ceremonies had to be defined, vows written, oaths performed, a choir lined up, etc.
The bride's family attacked and kidnapped her back during the ceremony.
At one point during the skill challenge the groom's player outlined how he was helping on every single aspect of the wedding to make it go smoother . . . and rolled a 1. Hilarity ensued . . .
Oh yeah, the session before the wedding was the bachelor party where the elf assassins attacked the groom.
Since 2 of our players have been married since that session we've gotten a lot of chuckles from "Wedding Planning Skill Challenge! Go!"
PS