RustySpork
Oscar Mayer Memer
Yup, Universal's two parks are side by side and you can walk from the one to the other. It's easy to get up early and stay there until close and feel like you saw everything.
There's also a lot of stuff at the parks to see that isn't advertised. A bunch of free tours (Men in Black, Lennon Room, etc). A piece of the Berlin Wall (behind Hard Rock). You can easily spend a day there having a blast and not ride a single ride.