There’s no way you’ll make it by 9:30. I’d allow at least 75-90 minutes to be seated and to eat. I’d budget 30 to walk to MK, go through security, and get to Fantasy land.
I had a Noon res at Chef Mickey’s. Arrived early, but wasn’t seated until 12:30. Then, it was another 75 minutes for lunch and meeting all the characters. Left around 1:45 pm. I think you made the right call to change Chef Mickey’s to the afternoon.