I've read the FAQ regarding GACs, as well as the main GAC thread. But I admit that I'm still not sure exactly how a GAC can help me with my most important issue, which is endurance. I'm using an electric wheelchair, but even with it my muscles can get tense/tired out easily. This often leads to painful headaches. We plan to take afternoon breaks and go back to the hotel. And we plan to use the Fastpass system when possible. Is there anything that can be done with the GAC to help us enjoy as many attractions as possible?