DY- I have been to plenty of conventions that were not witness related where people were kind and respectful. We didn't all look alike, or dress alike, or even think alike, but were there to learn about something we were interested in. I know it's hard to believe anyone but witnesses can have a nice gathering, even with thousands of people, but it happens every day all over the world.
For the Witnesses it's all a show, at least at the other conventions most people are genuine.