When people were coming in, ready for a show, they would have to make their way through stanchions which helped out a lot when there were big crowds. Depending on the turnout, using velvet rope might be sufficient.
I can remember one time, I was working a Backstreet Boys concert and I was guarding their tour bus. When the concert was over, girls came over to where the bus was and if there hadn't been barricades, I don't know what we would have done.
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