Welcome to the Disney Parks Moms Panel, Tegan!
You're going to Walt Disney World! I hope you are excited to begin planning your magical voyage. Thank you so much for sending us your question.
Disney's Magical Express Bus Service provides guests complementary transportation from Orlando International Airport to their Walt Disney World Resort hotel. This service does not need to be added at the time of booking your reservation - so you are ok!
Just make sure you do add Magical Express to your reservation as soon as you have your flight information, so you don't forget. When you are ready, you may call the appropriate number, based on your location, to have your spot reserved - select the highlighted link above for even more detailed information and the number to call.
I hope this is helpful, Tegan! Disney's Magical Express service is the ultimate way to start of your pixie-dusted vacation. You can sit back, relax, and let Disney do the driving.
Please do not hesitate to reach out to me with any additional questions you may have. I am here to help with all the details.
Faith