I was really worried about this too. I couldn’t get past the anxiety of “performing” in front of all of our closest friends and family. It had a big factor in my decision to elope with just my partner and I. When the day came I was so elated and distracted I didn’t even think about stuttering( and I’m NEVER not thinking about it). Just one happy moment to the next. Don’t let it get in the way. You’ll be so happy and busy you won’t have the energy to stress about it. Just focus on the celebration and joy of it all. Congrats!