It's a tough situation for sure. Personally I 'd actually seek a gig like this out - I love being around people different than myself to expand my horizons and see things through a different lens. These kind of experiences have been immeasurably valuable to me on many levels throughout my life. That being said, discrimination laws aside, I don't see why anyone should be forced to play a gig that they really feel uncomfortable with. A blunt conversation with them to see if they are open to putting their opinions aside and making the money, or if they just can't do this period is in order. Gay people being a major part of the audience is not even a factor for me or many others here I'm sure. But change it around to something that is important to you, and then how do you feel? So maybe you are a staunch Democrat, how would you feel about playing a "mission accomplished" party GWB threw for the "victory in Iraq"? Or his Birthday party? Or being the house band for some show on Fox news? What about a Hell's Angels convention? How about a Klan convention? Personally my line isn't drawn till we get to the Klan, that I just couldn't do, even if they are a legal entity that is allowed to have meetings. I'm not trying to draw a parallel between being gay and being a Klan member, all I'm saying is some people have very strong feelings about gay marriage. I don't get that, but as long as they aren't hurting anyone they have a right to be against it. Just like I can acknowledge the Klan can have meetings, I just wouldn't provide the entertainment there. The other obvious thing to me is, the people getting married probably wouldn't want them there anyway if they are that strongly against gay marriage.