Yeah. Once your onsite it isn't illigal. It's only a civil crime. So basicly the guards can only escort you off site.
But in my past experience in this kind of thing (obviously not to that level) if you get caught, just be honest. As long as they know your not there to vanderlise or comit a crime, they should be ok.
"It would be spiteful to put Jellyfish in a trifle..."