I recently did a wedding where as soon as I would finish setting up a shot an annoying wedding guest would stand in the prime position and take the shot. Despite asking him to move repeatedly, he would still move into my frame just as I was taking the shot. I have parts of his body in almost all my shots. Because the bride was explicit about allowing other guests to take pictures, I just grinned and bore it, but any advice on how to deal with this in the future? Definately don't want to institute a "no other photographer" rule