My big idea..

Yesterday's presentation on the competing lobster restaurants reminds me of a little IP problem of my own. I am pretty serious about starting a bar in New York City after I graduate. This bar has a very unique idea, one that I am confident will rake in the business. Among other things, the basic idea is that the bar runs on supply and demand. The prices of drinks are constantly changing like stock prices-- prices rise when that specific drink is in higher demand and falls if it is in low demand. The problem is, this sort of thing exists elsewhere in the world, and my vision is to basically copy everything short of the bar's name. In class we discussed that intellectual property rights could be protected for things like decor and recipes, but my question is, can you protect a pretty general idea like this? The intention of this post was not really to complain about my problems, I am genuinely confused and curious on the matter. If anyone can offer any insight so that I can avoid a lawsuit (let's assume I already have the $6 million needed to start it up), it would be greatly appreciated.