Hiya Steven!
Welcome to planDisney! The new
Lightning Lane Multi Pass system has been a new learning curve for guests and it was something I had a chance to experiment with a few weeks ago. I am also a Disney Incredi-Pass holder and loved making my reservations before I arrived. Having three attractions already in place for me to enjoy was a great benefit.
Yes, with your
Annual Pass, you can make three pre-arrival Lightning Lane reservations for one park and not use it all in another Park. However, since Annual Passholders can Park Hop you can use Lightning Lane Multi Pass in multiple Parks. The way to do that is to use one of the Lightning Lanes you booked and then book another at any Park you like. You can even at that point modify your other Lightning Lanes for another Park as well. Annual Passholders can make Lightning Lane Reservations for any Park they like just as long as they are eligible to enter it. In addition, if it is a Good-to-Go Day you can book for a Park even without a Theme Park Reservation. However, all three pre-bookings must be for one Park when initially made. The "unlocking" of Multi Pass for a different Park only happens when one is used on the day you purchased for. I'm only suggesting this if you wish to make more Lightning Lanes for the day and get the best value for your purchase.
However, Steven, you can use Lightning Lane Multi Pass as you like. You don't have to make reservations at another Park if you want. However, if you have time and want to check out what's available to book on the
My Disney Experience Mobile App then you should consider it. You may find the ride you really want to enjoy has a perfect time for you! I found many times during my trip available return times that let me enjoy the attraction immediately. It was great!
I hope this helps and you have a lovely time!
Happy Planning!
-Nimmy