You don't get to keep the costumes. Its just so you look formal while doing it, and they don't always give costumes.

In short--

Do you want GMs performing marraige ceremonies or fixing/solving game/customer problems?

Because we all know they are OBVIOUSLY doing that when they are not marrying people. And taking 15-20 mins out of their time would OBVIOUSLY make them slower. Obviously.

And don't forget, SnakeEyes is on these forums. And he even posted 11 or so times, thats like 11 mins! or even more! We had better tell him to leave so he can work on customer support.