We have 3 days. My plan is to knock all of HP out on arrival day. We will start in Universal with Diagon Alley and a butter beer and then HE over to IOA for Hogsmeade and a butter beer.
Then we'll do IOA attractions on Saturday and US on Sunday-and I'm sure I'll be on Gringotts both of those days because it is the best. ride. ever. And lots more butter beer