Two simple things to do,
1. Go to the WWoHP before 9:30 AM, go to Ollivanders, then the FJ, get a butterbeer, do some shops, and then hit the Three Broomsticks before leaving the WWoHP.
2. Go to the WWoHP after 9:00 PM, do FotH, then DC, then the FJ, and then more shops since they stay open later than the rides!
Do those two thing and you will be able to experience all of it, and during the rest of the day do the rest of the resort.