I have a couple thoughts. 1) It's your wedding so you can do what you want. As long as you're willing to go against tradition there are no rules saying you have to say vows any specific way (or even at all). You could just skip them. They're largely arbitrary anyway. 2) If you do the repeat-after-me vows why don't you use one of the "tricks" of stuttering and have you and your fiancee say your vows in unison. Using choral speech means you're less likely to stutter. 3) Screw the microphone if you want to. This is your wedding. We all know what happens at weddings. What you say to your fiancee isn't for anyone else but her/him. If you need to do something with your hands hold your fiancee's hand. All in all, just remember the peanut gallery comes to support you and your fiancee. They don't get to make demands on how you structure your ceremony. Weddings are silly traditions that don't really mean that much (you're still married if you elope or have a traditional ceremony with the vows and the candles and the whatever). Some people put a lot of value on them, if that's you or your fiancee, awesome, congrats! You can find a way to work it out. If it's not you don't feel pressured to do things because, "tradition." All this said, I'm not married and I'm not you so, I don't know how you or your fiancee would appreciate this. I don't put a lot of stock in tradition, so if I ever get married my wedding will be very untraditional.