Pubs (because they are freely open to the public) are the ideal venues for truly informal music making gatherings.

And again because they are freely open to the public - they are not ideal venues for any form of organised performance or mixtures of the two.

The point that seems to be missed (because it was thought necessary to mention it on the website) is that all customers would already and automatically recognise the licensee's right to prevent any form of activity that they did not aprove of.

However, I have witnessed situations where really fine informal music making sessions have been stopped in pubs when in full flow - not by the licensee - but by fellow festival attendees. When they have other plans for how the venue should be used at that time and are determined to ensure that these plans will take precedent over anything that is already in progress.

A situation that would arise for example in this case - if an informal musical gathering was in place at the time appointed for the story telling to begin in the bar. I have nothing against story telling or anything else - but would it not be better to set aside the skittle alley or (if possible) some other room for any planned events?

This would enable a free invitation for the public to gather and make informal music without any unfriendly sounding warnings. Unless using this venue for that purpose is not really the intention?