I love the expression "wonderful but small", here! In Ireland we like our pubs "small but wonderful"!

Regards

p.s. More seriously, in my experience, small singers clubs/circles tend to depend critically on having one or two people of an inclusive, sympathetic character, who can gently shepherd the session along - or tactfully shut up the obstreporous or merely boring. In the absence of some such, sessions tend to either become chaotic, enter terminal decline or take refuge in such rule-based methods as noting down each person who enters and calling them in that order! Such regimentation rarely sits well with the singing.