There is no guide. At some point, you just have to go inside the Talent Agency to start the quest. Nobody else on the island even mentions it.
the guy in the right coffee house
There is no guide. Once you are on the studio lot, you will see the director, Carson Willis, or his assistant Sofia, or both, at the various sound stages.
There are no keys on Back Lot island.
Go to the far left, in front of the Wax Museum, and an old guy will give you some.
You get the camera from the gossip magazine guy, Harvey Scoops, who is standing near the closed studio at the far right of the island (Sunrise Street).
no no
Back Lot Island (April 2013)
yes
The 35th island (August 2013) will be Virus Hunter Island.
There is no film in the camera Harvey Scoops gives you. Go to the far left, in front of the Wax Museum, and an old guy will give you some.
Go to Digital Dreamscapes. There is a veteran actor there who is tiring of doing motion-capture work for animated films.
You try to earn some by getting photos for Harvey Scoops, but once you get the film for the camera (from the old guy at the Wax Museum), you fall onto the studio lot instead.