There is a left and right runway which effectively separates the small fry from the big iron. If you're flying a 737, taxi up to one of the terminals, walk down the jetway and into the terminal area. Otherwise, you will have to land at one of the FBO's GA transient tiedown spots, and avail yourself of the nutritious fare found in several vending machines placed strategically around the area. Bring exact change.
Some examples follow.
If you want a little less extravagance, you can try the Marriott hotel's restaurant, at the corner of MacArthur and Campus Drive. If you want good food at a reasonable price, try Hof's Hut on Douglas Way, behind the Dean Witter Building. If you must, there's a Wendy's Hamburgers on MacArthur Blvd, but at this point it would probably have better to have patronized the vending machines. Sunrise is home to the largest, best-run aerobatics school on the west coast, too. You order at the counter and wait till they call you.