In article ,
DaveP wrote:

They have no interest in revenue and
are probably not authorised to issue PF's and would not be in the game of
detaining someone who didn't have a ticket. In fact they would probably
open the gates if you asked nicely enough, lest they be acqused of "false
imprisonment" or kidnap?

More likely they are instructed to avoid confrontation for obvious
reasons.

E.