I've been to a few piano bars, this one was probably the worst of them.
Here's the problem. I think most people get that the pianists work for tips. Fine, remind us every once in a while. But don't beg in between every single song, then stop mid-song to beg even more. Just play your fucking songs, let the crowd get into it, and the money will come flowing as the crowd has a few more rounds.
It's a pretty cool set-up though, lots of potential.