Originally Posted by JonnyAngle
If you keep it on the DL, you shouldn't have any trouble. If you say, "Hey, Bar Owner, is it OK if we bring our 19yo singer?" Then they will say no.
You said that she's a "she" and not a "he?" Just have her go in at the same time as the rest of you (so a door man doesn't ask questions). Also, I suggest that she doesn't order alcohol. She'll probably get carded. Otherwise, it's probably fine. If the bar tender asks, just be truthful and say she won't drink anything. That always worked for us when we played with a 19 year old guitarist.
We never had problems with anyone except the one bar owner who knew him personally. We had to put him in an adjacent video arcade that had a door next to the stage, and leave the door open. During breaks, he could only stay in the arcade or leave out the 'front' of the arcade, which actually just led to the back parking lot. Weird and it kind of sucked when we played that bar for the guitarist, but it worked.