It's all up to you. You can choose to have fun, or have a cr@ppy attitude and roll your eyes. You get out of it what you put into it.
What exactly were you expecting? This is actually a pretty good itinerary. I have people posting questions in this forum about FIDM all the time.
Getty Villa: LOTS of Roman and Greek artifacts. It should be at least a little amazing to see something that existed in a civilization from 3000 years ago.
Grammy Museum: Who doesn't like music? You can find a favorite artist, or find someone who influenced a favorite artist.
FIDM: Ever since the Hills, there has been a lot of interest in this place. Even if you don't think you are going to get into Fashion, this place teaches the Business of Fashion, so you could learn something.
Universal Studios: That's fun, right?
Cathedral: GREAT architecture. As someone from SF, you can appreciate architecture, right?
Walt Disney Concert Hall: Also an architectural and acoustical marvel. Hopefully you'll see a show.
Stella Adler: Maybe you don't want to be an actor, but you can learn something about the business that most people don't know about.
Hollywood & Highland: This is actually a very fun place. Up on the 3rd level, you can see the Hollywood sign. Have lunch at uWink, it's fun.
USC: For those who might want to go to college. Nice campus, crappy neighborhood.
Sounds like a fun trip. Beats being in school!