help with a fic

[ruby_caspar]

Hi all - this is very random, but I'm in the middle of writing a fic about Comic Con and have a question for someone who's been before: are you actually allowed to film the panels? I know loads of people do as they all end up on youtube, but I was wondering if that was all done stealthily, or if it's fine for you to film?

Thanks in advance, and sorry for the random!