I have difficulty imagining a quality show that has gratuitous profanity in it.  I don't know whether you are speaking of actors not wanting to say "hells" or "damns" or the much more, shall we say, graphic words.  I think they should bear in mind the play and the character and his/her position in the play.  I would discourage dropping mild profanity.  And, I would make it clear at auditions about the language in the show and how I felt about it.  If an actor auditions and accepts a role, I feel he or she has an obligation to say the lines as the playwrite intended, even in community theatre.  Having said that, I am not rigid when it comes to scatological language and the mighty "F" word, since it is important to keep in mind community standards and also that, in community theatre, we often times do not have a large pool of actors to choose from when casting a show.

As to the warnings in publicity, they should be to the point. "Salty language", "Strong Language", "sexual overtones", etc  tell what's going on. 

My wife was in a play that was "recommended for mature audiences". One of her friends didn't come and didn't bring her teenage daughter because she thought it would have sexual content. It didn't, but had very strong language, which wouldn't have bothered her.

And why do they say "recommended for mature audiences" when it's really the teenagers would get a bigger kick out of it than the old folks? 

Oh, castMe!!!! You are a man after my own heart!!!  Well, you and Picasso.

Juror #3, you getting all this....?