Wank aside, I think either one sounds awesome. If you can work out the logistics of the duel, that would be something people would remember forever, and you'd have an interesting wedding story for any kids you may have or any nieces/nephews you may spoil rotten.

You could combine the two, too. :D Have the duel start because he refuses to reveal who he is at first.

And screw those who say you shouldn't do it. It's y'all's party, have a mock duel if you want to. :D Boobies for you for having such an awesome idea.