Good luck! I just hope your zoos are better with pesky kids then mine. They're always marking up the glass with their grubby little hands or being loud and scaring the animals away.
The zoo's had that problem before unfortunately, but the volunteers and staff do a good job at telling them off. But it really should be up to the parents that do that :/ It's a problem at the SPCA here, we're always telling people off for disturbing the animals behind the glass.
It's frustrating, isn't it? My mom is one of those parents who made sure I behaved no matter where I went, but especially made sure my actions wouldn't disturb people or animals.