Small Town Legislation

In The Small Town and surroundings it seems to be an obvious problem that people visiting bars and restaurants bring their drinks with them when they go to the restrooms. At least I have seen several sings on doors to the restrooms informing that it is not allowed to bring your glass to the restroom.

My favourite is this one:



The text says it is forbidden to bring your drink into the restroom, reffering to "the alcohol law on serving of alcoholic beverages". Fantastic!! I wonder where I can find that law!! I am not sure I want to know what they think people do with their drinks in the bathroom...