Universal Studios would be better for your husband if he doesn't like rides. IOA is awesome though, I am not going to lie.
The Don't Misses Are:
The Simpsons Ride (it's a kind-of rough simulator, so your husband might not be okay with it)
Men in Black
Disaster!
Twister
Terminator
The Ride You Shouldn't Miss:
Revenge of the Mummy (intense, awesome)
Way to See It All:
If you avoid summer months and Dec. 18-January, you shouldn't have to worry about crowds right now. Express passes aren't expensive when it's not crowded, and if you don't mind a (at the most) 20 minute wait for a couple things, you should see it all (I've done IOA and Universal both in about 4 hours with no Express)
No magic at Universal. When you walk into Disney, you 'feel' something magical, at Universal, you don't. But it's very immersive and atmospheric, so what you feel, while it may not match what you feel at Disney, is a definite sort of 'difference' compared to other parks
Other Tips:
Pick Simpsons over Jimmy Neutron for simulator rides
Don't rush from ride to show to ride (there's not that many of them anyway) but instead, take your time and explore...the street sets between Mummy and Shrek are very neat to walk through
If you find yourself walking to Simpsons from the left side of the park, you may pass E.T. It's a fun ride. But even if you don't miss that, you may not see what's past that big building. In the back of that little area is a mini-roller coaster that's vastly underrated, a playground, waterpark, AND ball fort where you shoot foam balls at other people (it sounds gay, but it's FUN) That's a great way to get a little downtime from all that riding
Don't plan your day--playing it by ear is a lot more fun
The best table service restaurant is Lombard's, while the best counter-service is Mel's Drive-In (if you don't like what they serve, only International Food Festival by Simpsons has everything in counter-service)
Explore CityWalk after your day...neat little place to hang out
If the park is open into night hours while you're their, do JAWS at night--it's a totally different ride, and it's amazing in the dark!