This was our plan going into the trip, but found it a little harder to accomplish. There is def a sweet spot to Genie+. Our MK was a lower crowd day and had an opening time of 8am. With early entry at 7:30am we got so much done the first couple of hours and it was all pretty much walk-on (buzz, speedway, pooh, tea cups, grabbed a snack, barnstormer multiple times, dumbo, and ariel). Had it been a normal 9am opening then I don't think we would have been as successful. We had $LL for 7D and had booked a regular LL for PP for 11:00am. Since it was an 8am opening, we could book our next LL at 10am. I played a very frustrating game of refresh in order to get a 10:30am small world... it would show 10:30am, but then would try to book us for 1pm. Finally got the 10:30am slot so we could ride small world while we waited for our PP time. I played the same refresh game during small world trying to get a big thunder for right after lunch. It was close to 1:30pm when we finished lunch/big thunder and return times for the rides we hadn't done were still only at 3/4pm. We hardly ever stay in the park till 1pm so we really needed a break (young kids and my older parents were along). We took our break, but I had to keep checking for a time that would work so I couldn't just set a 2 hour alarm. I think I finally picked up a HM for 6pm maybe? It just felt like SO much work. The morning walk-on hours were so enjoyable, but once I hit the 10am window and needed to start paying attention to Genie+ again I just got frustrated. The return windows are obviously going to vary with the crowds and on a moderately crowded day then it should be easier to pick up a later time, but then on a really crowded day return times just run out. My parents hadn't been in over 20 years, so we felt like we needed to accomplish more then if it had been just our family of 4. We are def going into our summer trip with different expectations and trying some non Genie+ days.