That sign gave me a bit of a chuckle, though it maybe working, I haven't seen any of those types of posts in a little bit.
Maybe it's my Tom Selleck mustache or simply saying hello on the way in, but I I never experienced the feeling of being ignored. Even though most remain outside as advertised there was always the clatter of high heels on tile of someone following me through the door. They'd set me up with a drink and stay around for a chat if desired. Would even get a few drive byes to say hello. All very hassle free and enjoyable.