Hi Tiffany,
I can honestly say that my family have never encountered any problems with the
Walt Disney World Bus Service when we have stayed at any of the Disney's All-Star (Sports/Music/Movies) Resorts during previous visits to the Walt Disney World Resort.
As a general rule, I would allow approximately one hour when travelling from
Disney's All-Star Movies Resort to any of the Disney Theme Parks, Disney Water Parks or Disney Springs.
There is a fantastic transportation wizard which I like to use on the unofficial website www.our laughingplace.com.
It allows you to enter where you will be travelling to and from within the Walt Disney World Resort and then tells you various ways of making your journey, as well as providing estimated travel times.
I would recommend that you add an extra 20 minutes onto the travel time provided to allow for time which may be spent waiting for the next bus to arrive.
Wishing you a magical trip filled with memories which will last a lifetime!
Emma