"Sound" is omnipresent and the mics are omni directional, no real way to get away from sound but--get as close to the sound source as possible, where the music can not be " talked over" while playing. don't worry about between song chatter. I would get in front of one of the PA sources, set the pre- as low as you can go without clipping, the music itself will drown out any talkers, chatter, etc
I have pulls using the DPA 4061> include Pearl Jam at the gorge, in Washington state in 2005 and 2006.