perhaps I can shed some light on this...
most of the stuff we book is the result of bands' representatives calling us
sometimes I'll wonder why I haven't gotten a call yet on something that's right in my wheelhouse, or see that it's playing in NYC from reading the Voice, and make the call, but most of the time I don't have to seek it out...it finds us (and the other clubs here)
but, yes, I know zero about Rock en Espanol and haven't really had a necessity to learn, as our calendar is pretty full with stuff that we do know
we do check out every availability we get, and I certainly would never dismiss any genre out of hand, unless I do know the act and think they suck...and, of course, we even book some of those if I think it fits 930 and people want to see them
but the fact is that nobody ever calls us about this stuff
that all being said, I will check out the suggestions, and appreciate everyone pointing us in that direction