For the last 5 years, our kids' high school graduation ceremonies have been ruined by cheering. Somehow it's got to be stopped and warnings don't do a thing; neither does issuing invitations. People don't just stop at cheering, they get up and do coordinated dances, wave flags, etc.
Our daughter got 2 degrees from Georgia Southern in the past couple of years. We didn't hear her name either time because of the cheering and dancing going on for the guy before or I think, even 2-3 guys before her. No one has the right to ruin a formal ceremony.
I am all for posting policemen every few feet in the stand if that's what it takes.