Are you staying onsite? We stayed at Portofino and easily did USF and IOA in 2 days. We just showed our room key at every ride and scooted right up to the front of the line. It was unbelievable. We did 5 rides at USF in an hour, and that gave us a great opportunity to have a long leisurely lunch. We finished USF and even had time to hop over to IOA to do our 3 favorite rides. So we used the 2nd day to see shows and do rides which we normally don't have time to do.