Only IOA at this time. Right now, early entry has been starting at 7:30 but may change as crowds lessen. All attractions in the Wizarding World are open at this time.
We were just at IOA / USF and we were in IOA and on Harry Potter by 9 AM . The parks opened at 8 . We went on a Sunday morning and waited 30 min for FJ . Then everyother day we were there we went on at dinner time and waited no more then 60 min . Which was short considering 120 min waits at the height of the day . Sometimes a 60 min wait can also be like 45 min . and the line for lockers is longer then the line for people with no bags . The locker situation is REALLY a mess with the huge crowds and tiny space they need more direction there or to move those lockers !