There was a thread a couple of months or so back (?) about how to deal with noisy members of the audience, or people being rude by talking over others at sessions, etc.

In spite of searching, I can't find the thread, but I think it was called something like "I walked out of a session" or similar. Maybe someone better at using the Mudcat search could locate it?

One thing that came out of the discussion was that instead of singing louder to compensate for the noise, singing more quietly can sometimes work. Then everybody else there will get p***ed off with the ones who are talking loudly, and probably glare at them, and intimidate them into shutting up.