I love Halloween, seeing people dress up for comic con, and all sorts of geeky things, BUT...a wedding? Call me traditionalist, or even old, but that is a bit much. Not only does it cheapen the meaning of the event, but how silly and immature will the wedding photos look in 10+ years when you are dressed as Captain Picard, flanked by a jedi, stormtroopers and the tooth fairy, and married by Gandalf!
Might as well save some money, and go to a drive thru wedding and get married by an Elvis impersonator in Vegas!
So, in other words, the line must be drawn here! This far, no further!