Welcome to the
Disney Parks Moms Panel, Margaret! Sounds like you will be having lots of fun at the
Walt Disney World Resort!
Disney's Magical Express is one of the greatest perks one can get when staying in a
Disney Resort Hotel.
As far as I know, guests have technically until right before midnight of their check-out day to board the Magical Express bus. Your Disney's Magical Express reservation is linked to your hotel reservation, so you must use this service on the day you check out, so I am afraid you will have to consider other transportation options, such as a
Minnie Van shuttle to get to the airport early in the morning.
You can also ask the Cast Member assisting you at check-in and let them know that you have an early flight. Also, remember that you can always call (407) 939-527 and speak directly to an agent. Be sure to have your hotel reservation number handy!
I hope this answer has been helpful, Margaret. Please, come back with more questions; we are always eager to help!
See ya real soon!
~Desiree