My plot prediction is that the petting zoo will be important in the upcoming conflict between Rob and Tom. Rob convinced Johnny to work there for free, and Tom said “We’ll see about that ” or something to that effect under his breath.
Tom is really starting to get angry with Rob and even convinced Johnny to ignore Rob’s dodgy career advice. That sort of slight won’t go unnoticed by the dark lord.
Whether Kirsty is a part of it or not, there’s going to be a confrontation between those two. Rob’s going to lose.