I have a public service job and we see lots of people outside the normal range of behavior.

A certain amount of tolerance comes with the territory; and, we have to set very firm limits with some. including time limits for being there.

I am with those who want a performance venue to be pleasant for the majority of attendees. I have bipolars in my family, and however much I love them, I don't think they should disrupt a public event. Same for the current active alcoholic in the family. her attention-getting behavior has us all wanting not to see her.

It can be a very fine line; if you have not dealt with someone seriously behavior impaired, you may not have the whole picture.