Hey, gang. We are going to WDW in September and my DD9 wants to take one day at IOA. We'll probably rent a car from WDW (unless someone has a better suggestion) and drive to Universal Orlando. We've never been there so I have very basic questions.

Where do we park? Is there just one parking lot for off-property guests? And does it service both of their parks?
About how much time should I allot for parking and getting to the park?
Would you consider IOA a half-day park? Or is there plenty to see?
Any lunchtime tips? (I would appreciate it!)

Thanks!