Do I need to carry my TICKET with me all the time?

Just the armband boss. You won't need the ticket at all after you go through the tollbooths. Don't lose that wristband though.

Well, the perforated ticket stub at the bottom. The ticket itself becomes a bitchin' souvenir.

It'd probably be easy getting into Centeroo if you were discrete and careful. As far as getting onto the grounds she might have to sneak on, not that that'd be difficult. And not that I'm suggesting you do anything that you shouldn't.