You aren't going to get cheated on anything at Quigley's. Great value for food, decent taps. There are very knowledgeable servers there, but on our last visit, we got a rookie. Nothing bad, just some awkwardness.
I also have had issues with the credit card/debit machine, and was not notifies ahead of time. It was like it came as a surprise to the staff, although it's happened 3 times to me.