Good question. We met Dan Murphy once, but only very briefly. As smokers, we seem to run into the spouses (usually male) of DISers. Me and my big mouth talks to everyone anyway. I wear my green ribbon on every trip and have never been approached. We were there during DIS-CON 2 and never met one, can you imagine that?
In two and a half weeks we're off again, but this time I know I'll meet some as we're takeing and Illuminations Cruise with 2 other DIS couples. Can't wait.