yes, the private part of that is enforceable, but it says "debt". So, a retailer can say "no cash" but if you somehow are in debt to a retailer (say for example

yes, the private part of that is enforceable, but it says "debt". So, a retailer can say "no cash" but if you somehow are in debt to a retailer (say for example that you already ate the meal at the restaurant), you are allowed to settle your debt with cash, all debts, public and private. If they try take you to court or try to press charges, if you're waving cash, they are out of luck.