I actually wish visitors didn’t react negatively to zoo keepers. I did an internship at a zoo and we had visitors coming up to us with questions or observations so I think it is nice to have that interaction. Also when feeding young birds we would do behind a glass wall so the visitors could watch. It’s part of educating people. Even just walking around with food, visitors could be like “oh so that’s what they eat”. Though he idea of having staff paths only so your keepers can get around quicker is nice and also realistic because there are parts visitors can’t come (usually the entrance to an exhibit)