mmm I think it would be better to have a few live performances~ just a few volunteers might work~
I mean, actually doing everything in a wedding takes much longer than 3 mins x_x
if you really want to make a girl happy~ it's good to plan a wedding with her~ alot don't like planning it by themselves, or having it all planned out for them. There's really alot to keep in mind when planning a wedding~ especially like the day that it'll be on, season, etc. You also have to find a good song that expresses both of you, rather than just one person :P
there's alot more to weddings as well~ biggest thing to know is costs of course x_x but I'm not professional with weddings~ just been to a few :P