I think, depending on when you go, you can get through everything at Universal in a day if you have the Express Pass. And by “everything” I mean, in the very least, the things really worth doing. There are plenty of things worth skipping if time is short, including, but not limited to, Twirl and Hurl, Stormforce Accelleratron, Jurassic Park River Adventure (although, still nice to see if you don’t mind getting wet), a few of the Seuss rides, Transformers, Shrek 3D (yes…even if you love Shrek…movie is dated), The Woody Woodpecker coaster, E.T. (okay, nostagia says otherwise, and the queue is cool…but the ride is very dated and is trying too hard to be Peter Pan’s Flight). Not that you SHOULD skip them, only that if you don’t have time, they are the ones I’d put on the bottom of the priority list.