Instead of a volume pedal to cut extraneous noise in between tunes, you might also consider a noisegate pedal which will do the same thing automatically.

Bill, tgo

One other thing to try is rolling off the high end some. Many years ago my band use to play a venue in Chicago. I was playing my Jazz Bass which I has built a preamp into along with all of the shielding I could manage. The only way I could get rid of WXRT was to reduce the treble on the bass and amp. Not the ideal sound but it worked. Now that I look back on it would have been a great way to get music during the break.