Broadway plays...and how about the opera? Or Carnegie Hall, etc? Is it not a sign of respect, or a mark of the "occasion-ness" of it to dress differently than you might, say, to hang out at a bar? Is there/should there be a distinction between these things, as manifested in the way we dress? I think so, hope so. The opera feels different to me than a bar, and I want to demonstrate that outwardly. It's also an indication of the specialness, the out-of-the-ordinariness of the event. If not in the way we dress, than how to make the distinctions?