This may be a stupid luddite question, but do the restaurants provide free wifi to access this data keyed from the QR codes? Because without that and me carryi

This may be a stupid luddite question, but do the restaurants provide free wifi to access this data keyed from the QR codes? Because without that and me carrying a computer with a camera, my flip-phoned self has no way to access their electronic menu. Obviously I'm not their audience, and I'm not going to NYC to eat, but does this really work for them?