You nob.
Pretty much anybody can perform the ceremony if there's a registrar present.
( Dr. Shambolic je suis charlie, Tue 26 Aug 2008, 20:55, archived)

Yeah, but I get to wear fancy stuff and act important
IT'S THE PRINCIPLE, DAMNIT - THE PRINCIPLE.

:)
( Derpasaurus DOG FARTS, Tue 26 Aug 2008, 20:56, archived)