Well what I was actually thinking about is, a semi-public wireless network. A new martial arts school is opening. They already have plans for having private party times on the weekends where for like $10 you can drop the kids off for a few hours. A safe and healthy environment you can leave them in while you go out or just enjoy a little quiet time.
Anyways some people (like us) are going to be bringing the kids there almost immediately after school. After the kids classes, are the adult classes, which I'll be taking once my hand heals up. I thought it would be nice to have net access there for school research and such, for the children and college students, etc while they wait.
So you could see why it would be preferable to limit access , so kids with their own laptops won't get into things they shouldn't.