Video camera policy question

Hi! Someone brought up bringing a video camera and that reminded me finally of a question I had after the convention but had totally forgotten about.

My friends and I bring a video camera with us to conventions for our own personal use. We record ourselves being...ourselves and then later after the convention have a tape party and watch it all together. It's absolutely for our own personal use and is not released publically and is totally hilarious except the parts where we forget to turn it off and it's recording the floor.

In two places we were informed by staff we could not record ourselves. One was in the dance one night (which probably would have been pointless anyway because it was dark ) and the other was in the hotel lobby when we were waiting in line for the elevator to go to our rooms. Reading through the media policy again I still can't see any part that might indicate why this was not allowed... I'm just curious as to what possible reasons there might have been so I can avoid any problems in the future. The dance is an event, so I can kind of see some extra regulations around that (even if I don't know why), but the one I'm most confused about is the hotel lobby.

Thanks for any insight you can give!