Its an RP thing, you get a bunch of people together and have a ceremony. There is no actual in game function that says you are married, or lets other people know you are married.
I was hunting in the Hot Springs a while ago, and some global announcements were made regarding a wedding that was taking place there. A bunch of people showed up in their formal wear, and all was proceeding nicely. Until Zariche showed up. What a massacre!
One person plays the role of the bride,another the groom, and another the priest who recites the vows. They are usually
done it Aden church or occasionally inside a castle after a siege as a way to celebrate and be goofy.
hmm ok heres a question if your wearing formal wear and you pick up demon sword zariche. will you instantly unequip the formal wear or will you wear formal wear + demon sword