Press passes are pretty easy to obtain. I helped publish a small film magazine in the '60s and we printed very official looking press passes. Since we didn't pay very much we felt obliged to offer them to pretty well any of our writers who wanted one and had the chutzpah to use it. I used mine to get in to the Rock&Roll revival show that turned into Live Peace in Toronto when John Lennon, Yoko Ono and Eric Clapton flew in in from London. I wasn't planning to go to the show till I heard they were on an airplane and planing to perform. I wandered down, flashed my card at the gate and got in just in time to see Alice Cooper.
As I remember it, one of the people using our press pass was Jonathan Demme who was our London correspondent. Can't remember if he ever wrote anything or what he was doing for a living a the time but I think he claimed he got into movies free with it.