We were at US/IOA from June 7-10. We didn't bother doing IOA since we were checking in from Disney to RPH at about 12 pm on the first day - so we just spent our time over at US and basically did everything we wanted to do there 3 times over, LOL, grabbed dinner @ NBA, watched some of the playoff and crashed in the hotel. NExt day, we couldn't seem to get our rears in gear and were over at the IOA gates at about 8:15. Ugh. Got through turnstiles and just as we are about mid-way to HP world, dash it all - they let EVERYONE through. SO much for 1 hr early entry! Half hour at best that day. And those folks were ready and RUNNING... right past us! Wild stuff, man, just wild....their black robes wafting behind them, blowing us away... Not even a well-performed patronum was gonna deter that crowd. So we kept on plodding along and got to HP world and the line for FJ was already at 45 min. LIne for Olivander's was long but figured eh, let's get er done. Did that - and agree that it's good for 1 time only and a bit over-hyped. Kids did Dueling Dragons w/ their dad, I took little man to FoH, and we left HP world. At that time - FJ line posted was 120 min. That's just crazy talk... and yet, I saw lemmings joining the line. No way, sez I. So we left to ride all the other stuff IOA has to offer. After touring park, getting sopping wet, and then changing clothes, we went back to Pottersville around 3 pm. Wait time was posted at 30 min, so we went for it. Trouble was - ride kept having tech difficulties, so our 30 min wait turned into 40...50...60... We were doing child swap, and we FINALLY reached the child swap "room" at 4:30. UGh. It was quite full, and frankly, while I appreciate the TV screen and seating, it was too crowded to enjoy. PLus - a few eager-beaver parents were all huddled at the half-door, so it started to feel a bit claustrophobic and "dungeonish" in there after just a few minutes! Fortunately - it wasn't long before my DH and older gopher pups returned, and it was oh so nice that they let my three elders ride again with me - sort of took the sting out of a 1.5 hr wait for them. After that, we did the roller coasters again (FoH for litte guy and me, dragons for elders, and left HP world. After dinner at Mythos, we went back to HP at about 6:45pm. Ahhhh, much better. THe streets were no longer body-pressed-to-body, and wait for FJ was posted at 30 min. We did single-rider and rode 3 times, no sweat, no wait. The butterbeer lines, however, remained long - 10--12 deep. Ironically, however - 3 Broomsticks was practically empty. We walked right in, got our drinks, sat down, and even as we left - the lines continued to be dauntingly long at the carts... even as they SAW us exit 3 broomsticks, cups in hand! Amazing.
We tried the early entry 2 more times that week - (getting there far earlier) and also came back in the evening the next day. So with 2 full days, 2 half-days of park-hopping, I believe my kids logged around 12-15 turns on FJ, in addition to multiple rides on all the other rides in the park. Frankly - I wouldn't bother with the early entry. We did as much - no, make that more - in the evenings as we ever did in the morning - with no running! And we could have slept in!