THANK YOU for asking this question and to all for the timely responses, As a long time Disneyholic, but a very anti-Genie+ person (based on trying to use it during a previous trip a year ago) I was hoping I could find this same answer.
My daughter and her boyfriend are doing ONE Disney day together with us next week. I know it's Spring Break week, and I'm already seeing park reservations showing unavailable parks for 4 days that week, though not YET for the day we plan to go. So we feel it would be good to do at least two parks.
We have decided we want to do EPCOT for our first park, then hop to MK that evening. With limited time, I've decided to bite the bullet and try Genie+ again for us. However our EPCOT goals are really only GoTG (in the morning hopefully) and then maybe some Food and Wine booths. Perhaps one or two other rides there (thinking Test Track and/or Soarin') but not sure how fast those LLs go and would be okay if we had to wait in line for one or both. So I thought instead of booking rides at EPCOT, that morning I'd just book rides at MK instead.
So I'm guessing I can book my first MK ride at 7am (as long as it's an after 2pm slot) and book the second one 2 hours after 9am park opening (so 11am). We plan to hop to MK close to 2pm and spend until 11pm there, so I realize our chance of getting other LL selections will be limited since we won't be able to use our first one until after our 2pm arrival. Refreshing/changing wasn't an option when we used this before, so I'll have to learn about that before we try it.
So if we do end up getting a LL reservation at EPCOT (say for Soarin or TT), then we can still book a second one at MK starting at 9am OR after we ride our EPCOT ride via the reservation, correct?