That's easy, plain and simple, always treat the staff real good! TIP!!! ..even if it's just water you asked for. You'd be surprised how often the staff's approval of you is considered for a return engagement. Especially if you're an open mic'er looking for stage time. TIP!!
It works like magic! You should not be surprised to know that treating a venue's staff well and behaving professionally is a key to your image there. Remember, for the most part a staff doesn't get to know you, they see you barely when you arrive, they see only part of your show if they're busy,.