Russ it happens too me all the time , I have a strict rule to say no unless i know the person , i do have support of management on this once in a while i will let someone come up but got to know tthem and the got to have good chops or no go .
it take a while to build room to where i want it and it always when i got it at it peek last saturday it happened some guy in a tux walked up to me and requested a song and I said i can do it for you he says no I want too he had a $5 in his hand when i said not at this time he got a bit huffy with me i told him to out the 5 back in his pocket and sit down .
all i need is some hack killing my room .
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Genos, PSR S970, Fender Tele Amercian Deluxe Cherry sunburst , Cubase Pro 8 ,Yamaha A3M Acoustric ,Taylor 814, Ibenez Artcore Custom Tascam DP 32 Yamaha DXR 10, QSC K-12, K 12 Sub K 8 Sinn 945
2 Fender Expo line units .