I'm trying to go this sat for my bir tghday but don't know how much they charge and what type of music they play on sat night?

Saturday are closed, this Saturday 10-21-17 is a one nigjt Special event 21+

How much do they charge sat nights?

Well, as far as I know they play latin music here and they say that it is one of the hottest music stations they have. But I suggest that you call them to ask them exactly what other stuff they play and about the price for renting the parking lot and everything else. Good luck!