Expressions Hair Design v. Schneiderman

I mean, suppose some kids have a lemonade stand or they’re washing cars and they say a glass of lemonade, $1 and then somebody comes up to them and says I’d like to buy that with a credit card. It might happen today. I have -- I have never seen anybody younger than me buy anything with cash. But that would be a violation if they put the $1 there on the assumption that everybody is going to pay cash for their lemonade. These are tech savvy kids so they can -- could process a credit card purchase if they wanted to?
The statue has no exemption for kids selling lemonade.
Expressions Hair Design v. Schneiderman Source