While the rain has let up momentarily, an understanding about umbrellas has been reached among (most) concertgoers. When the set starts, fold up the umbrella.
There have been a few incidences of a row of umbrella carriers blocking out the stage for people behind them. Yelling and throwing of beer cans ensued.
Now, if we could only figure out a way for people to be more aware of their giant handbags/backpacks. Folks, when you spin around to talk to your friend next to you in a crowded festival, your giant bag knocks into 10 people. None of them are pleased.