Well, I don't know what happened there ie. above message or lack of it.

You have to be a bit careful around here [Leeds, England]; we've played a few venues which have a notice in the Green Room - No Rebel Songs - especially in areas with a high Irish population. If in doubt, ask the person in charge of the venue. Having said that, you can get away with virtually anything on Paddy's Night - weird, isn't it?