[quote name='chris_b' timestamp='1497960955' post='3321618']
I don't do multi band gigs, but on a festival, I meet the sound guy and introduce myself, get his name, shake his hand and have a chat about the sound. I have great DI's in all my amps. I give the FOH post EQ. I have never had an issue, problem or confrontation with a festival sound crew. I always thank the guys after the gig.
[/quote]
I couldn't agree more with this approach. Establish a bit of a rapport with the guy and he'll be more likely to go the extra mile. Communicate! I've done sound checks as a singer with guys who curse under their breath at the fact there's too much/not enough of themselves in a monitor mix (for example) and I've found myself having to calmly explain to them that the sound guy isn't psychic and can't be in two places at once. Then proceeded to politely ask for the adjustment in monitor levels. If you don't ask you don't get most of the time. A thank you costs nothing.
Unless of course the sound guy was genuinely terrible and a d*ck