Absolutely agreed with what you've written. Controls have been put in place for good reason. Yet it is true and we all know that people have and always will queue. The residents, authority's and I imagine some fans don't want, at one end of the spectrum, a campsite and yet I expect the authority's accept that eventually some kind of queue will form.
Personally - and having been there to see it - I'd take the view that a handful (I'm talking 3-5) people discretely making a list and then telling fans to leave are serving both the venue/residents, by preventing a messy queue forming early,