It was pretty cool. It almost turned into a Charlotte NPR PR campaign. However, it annoys me when Northern people think that any southern person would EVER use "y'all" to refer to one person. We might say "Who all" when asking people a question about the number of people who will be attending an event. But we never say "you all" to one person.
Only criticism in a show that made the front page of the Charlotte Observer. It was really a lot of fun.