Do you ever get to see rushes, dailies or rough cuts ?
Never. Occasionally there's talk of it, and I've heard rumors of such things occurring once in a blue moon, but, in my vast experience, it never happens.
In terms of visuals, you're usually working from some pre-production art and maybe a stack of publicity stills.
Edit: Okay, on Death Defying Acts,
I was sent an advance copy of the movie trailer, which I watched over and over, taking notes.