First of all it strongly depends on the zone, managers, and even scaractors when it comes to the photos. I personally will scare those with video cameras since they are so focused on the screen they don't see me coming up with a scare into the camera. But if the camera has an obnoxious light I will hide, no need to blind myself so you can post a video to youtube.
Secondly, with being in a corner for a scare zone. While you may be out of the flow of traffic, most (if not all) corners and "hiding spots" are actually where the scaractors go to hide/prepare for a scare. So if a Guest is in that location, we cannot safely return to our scare area. I'm sure you're really nice, but I don't think it would be too much fun to squeeze into a tight corner together. The key thing is to keep everyone safe, so if the scaractor does not have a safe area to return to, it can create issues.
I did see people taking pictures in the zones after closing last night, granted you don't have the scaractors there, but you can get some cool shots of the decorations.
Sorry I can't offer too much help, there is the new photo op at the front of the park. After 8 it slows down up there so its a good time to get pictures of Lady Luck/Demon and her minons.