1). You should be allowed to bring a camera. I use the camera on my phone, though, so I'm not 100% sure about that. 2). Depends on the arena. I sat in Section A, Row 2 at the War of the Worlds Tour in Terminal 5 (NYC). It was the first time I sat ringside for a show and it was beyond awesome. 3). The show was about 4 hours. I attended the pre-show meet and greet, which was about an hour before bell time. 4). There should be a pre-show meet and greet at all shows. It's usually $20 for an autograph and picture for "singles wrestlers" and $30 for tag teams. They usually provide 8x10s for talent to sign if you don't have an item of your own.
Feel free to visit my blog concerning wrestling conventions, signings, and meet & greets! squaredcirclecons.com/