I really don't this to become any kind of argument between me and thee, 'Guest'; I have no particular axe to grind here!

But my point is valid. Yes, courtesy and common sense are important, as I've already said. And I have plenty of both.

But they were not enough, at my first ever weekend folk event, for me to understand exactly how things were, and what I should or shouldn't do/say/sing.

I'd never experienced such an occasion before; and it took me quite some time - then, and afterwards at other events - of staying quiet, observing, listening, and watching for hints.

In those days, I'd have so welcomed some detailed guidance such as that offered by Joe! (No pun intended just there!)