Rules schmules! Forgive my seeming arrogance, but those with a reasonable respect for rules had better stick to taking pictures at the zoo, and only from designated areas.
Just when did photographers stop packing Cajones? Back in the good old days it was clearly apparent to my impressionable young self that the guys who were getting the great shots were not the guys who were respectful of rules, passes, or permissions or who were particularly fearful of litigation. Forgive us our timidity, Cartier-Bresson, Capra, Weegee, et al, we are unworthy of your example.
And look there's a style to breaking the rules, some can do it with such grace and diplomacy that the rules seem silly to all involved. A good rule breaker will soon have the Draconians carrying his ladder. But some others never rise above the level of an irritating dweeb. It takes a bit of study to get it right. I'm only barely competent. My personal best record was fending off three guards for fifteen minutes, fortunately these guys understood they did not have police powers and were shy about calling the actual cops, to whom I would have listened. Finally I got them interested in how to take stitched photographs.