OK. I'll make a comment on the "floor spot". They were fine in their own way. ;)

I've not been that good at attending other folk clubs of late and, not even my own, for good personal reasons. So, I Maybe shouldn't be too critical.
However, speaking more generally, there often seems to be times when people come just to support their pals whether from another folk club or not. I agree that it's courteous and respectful to stay for the whole night and many times this just doean't happen.