These guys are so full of themselves it's pathetic!
I remember the one time way back in the days when they had them at the Pontiac Silverdome in Michigan, one time, in I believe in the '90's, they decided to save the money they had to pay the police to direct the traffic out on a Friday. IDIOTS! IT WAS A DISASTER!
The police can control the flow of traffic on the roads outside the venue as well as inside. The idiots who were trying to direct the flow out of the Silverdome had no such authority, had NO fricking idea what they were doing, and it took HOURS to get out of the parking lot, where normally it would take less than an hour. They would allow one lane to go inside the parking lot, forgetting about the other two trying to go. The police were actually lined up across the street, in case things went wrong and they were needed. You could actually see them laughing. The next day the police were back directing, I can't remember the lame ass excuse they gave for paying them again. But I believe attendance was down that day, aSaturday!