Crazy Idea -
I did this once on a solo trip, plus I was using Mears.
I had a 5:30 am flight home, so I checked out of my resort the day before with late checkout resting till about noon, and getting bags to storage by 1pm, then I was off to the parks, then PI. I closed PI down, then took the bus back to my resort, then got my day bag out of storage and got permission to use the pool showers to freshen up.
Mears picked me up about 3:30 am. I slept on the bus, slept on the plane, then when I got home, went to work.
This may not work for you, but it can be done.
Carol