Fab airport but keep your walking shoes in if you are changing terminals. Also allow minimum of two hours between flights if you need to pick up a boarding pass.
Great airport & super organized! If you have a long layover, try to go outside to see the city or go to the Dubai mall (take a cab for $10). Look for the arrivals area and going through immigration.
If You're up to rent a car, be sure You have an international driving license. We didn't and we were not given a car. Check the cancelling conditions with rent a car agency...