Were there at a concert in July 2018 and the area ...

Were there at a concert in July 2018 and the area itself is very great, it was well organized and the toilets were clean and plentiful. But the admission control was a cheek. We both had bags that were too big (bigger than A4 - which I would deny with both bags because they weren't bigger than A4) but neither of our bags was checked for content, we should just go to someone else at the entrance go who shows us where we should drop off the bags. Since we both found that pretty outrageous and didn't know exactly what to do now, we just went into the concert area and lo and behold - there were hundreds of people with backpacks and larger / larger bags inside. Of course, I don't know whether they "smuggled in" or caught another inspector who didn't take it too seriously. We didn't know anything about the size restriction for the bags beforehand, that should be clearer in advance or you can cancel this (mM according to pointless) rule, since it doesn't depend on the size of the bag but on the contents, and with a travel bag you don't go to an open air concert anyway ...