Hi Charlotte!
Thank you for bringing your question to the Disney Parks Moms Panel!
It's so hard for me to believe it's already time for
Mickey's Not-So-Scary Halloween Party at Magic Kingdom Park again! This party is one of my family's favorite events, so I am super excited that you get to attend.
The
Walt Disney World Bus Transportation system is a huge convenience and benefit to staying at a resort on property. The buses run at approximate 20-minute intervals throughout the day, beginning about one hour prior to a park's opening. So, you shouldn't have to wait longer than 20 minutes for your return bus from Magic Kingdom. They will continue to run two hours after the park closes, and they often run extra buses during closing time due to higher Guest demand.
I would anticipate your bus ride from Magic Kingdom to
Disney's All-Star Movies Resort to take between 15-25 minutes, depending on stoplights and traffic.
I hope this information is helpful. Please let me know if you have any additional questions as you plan your Not-So-Scary adventure!