omg...who said anything about 500 kids? why are you getting so extreme? this is ONE child.... ONE... just like lots of other kids throughout the decades who have set up lemonade stands...so what if its in central park or peoria? sheesh.. whats it like to be that paranoid all the time? Yes, one little child and her lemonade stand is going to turn central park into a giant open air food court... you win the olympic conclusion jump leap for sure.
You say that one child should be given permission to break public laws on public property. If this child is shown favoritism under the law, you think that all other kids (not to mention all the adults who will be thrilled to establish commercial enterprises rent-free on public lands in their kids' names) should be denied the same right to evade those laws which this kid & her Dad are now demanding to break? Laws which were instituted by the public to protect their publicly owned park land from commercial enterprise?
Again, she's free to open up a lemonade stand on private property with the owners' permission, but if you allow her to skirt the law on what she does on public parkland, you're opening the door for every other citizen to do the same.
That is, unless you believe only certain people of your choosing should be allowed to enjoy special dispensation under the law and should be arbitrarily accorded the 'right' to disrupt other citizens' legal rights to enjoy their public lands under the public laws instituted to restrict their public use to the public's - & not to arbitrarily favored individuals' - benefit.