You could possibly use single shot cap n' ball type pistols., this way youll have no need of gunpowder anywhere in the vicinity of a wedding., and no accidents., the gun simply uses a cap., which is fairly loud and quick to re-cap for another blast.
That ! Is really cool., way to go! Please DO POST with the masts as well., but it is a good looking vessel., the the cut outs for the Oars look like their for cannon!