looks great. both the idea and the UI of the website and what is shown in the the demo.
some of the comments like creating a website, not just a mobile site, are great too.
but i wonder, what is your target for # of clients? I would think you would need at least 1000 clients at $15 a month. is that realistic?
according to some results from a google query there are hundred of thousands of restaurants. i also wonder, were these numbers on your mind when you created the service?