The free puzzle shelf now has signs explaining the concept in English, French, and Spanish. That covers the most common languages I hear people speaking here. Italian is rare here (only hear that a few times a year) and the German speakers do a lot of code switching so I figure they're covered.
There's a local election coming up. I vote for the people who are daily customers because they tend to be helpful about getting problems fixed and providing information. Elected officials who hide from the people are bad news.