Hey there, Marian. Thanks for stopping by the Disney Parks Moms Panel with your question.
You actually have a few options on how to get to
Disney's BoardWalk from
Disney's All-Star Movies Resort. If the
complimentary bus service is running to the
Walt Disney World Theme Parks at that time you can hop on a bus over to
Disney's Hollywood Studios. From there, it's either a short boat ride over to Disney's BoardWalk or you can walk via a connecting path but it is about a 20 minute stroll. Buses start running about 45 minutes prior to that specific park opening so that option might not be available if your reservation is in the morning.
What I actually recommend and what would be the most convenient thing for you to do is to use
Disney's Minnie Van Service from your resort to Disney's BoardWalk. Disney's Minnie Van Service is found within the Lyft mobile app so be sure to have that downloaded on your smartphone before your trip. When you are ready to go to breakfast simply open the app and select the Minnie Van. If the Minnie Van isn't the default vehicle displayed just swipe through the choices until you come to it. Then you can enter your destination, see which Minnie Van will be arriving for you and pay all conveniently within the app. The Minnie Vans start running at 6:30 a.m. each morning and will pick you up at the front of your resort, near where you checked in.
I hope this helps get you to where you need to go. If you have any other questions, please feel free to come back and ask.