I like the idea of convivial anarchy where what I say goes. So if you see me singing just shut the feck up and listen, OK.

For sure, if you don't know what you're doing, then the best thing to do is to listen in respectful appreciation, as we all must. Respect is the key here; that and musical appropriateness. God knows life's too short for open confrontation in a social situation, but music is too precious to be blootered over by cack-handed guitar guys who think they know better than you on things they've never heard before and haven't the first clue about. In this sense it's like turning up at a recital of Bach cello suites and proving impromtu continuo by strumming along, which they probably do; on the evidence it wouldn't surprise me - but I'm sure they wouldn't get very far before being impaled on the cello spike. Anarchy is about engendering freedom in self by engendering & acknowleding it in others; if others openly oppress my freedom then I will, at the very least, say something.

Come all ye, but leave your own rules at home. For sure our rules may be unwritten & only proved by significant exception, but part of the fun of the music is figuring that out as part of the very convivial hand of welcome.