Just to quell this before it starts...and I'm not trying to start anything with Albytaps.. having a cane/wheelchair/crutches/GAC DOES NOT give you front of the line access. The only people who get front of the line priviledges are Make a Wish Kids. I will agree that at one point having a wheelchair or cane or things like that did afford you priviledges like getting to the front of the line or a shorter wait, this is no longer the case and hasn't been for a long time.
True! My mom is 77 y/o and has very bad knees (bone against bone--needs knee replacement surgeries on both, but refuses), is also a bad diabetic with foot problems, has arthritis with alot of hip, knee, hand, wrist, and shoulder pain. I take her to WDW at least once a year and always get her an
ECV. She doesn't use anything at home, but there is no way she could walk the distances required at WDW. Disneys response to mobility/stamina problems is to get an ECV or wheelchair. Most lines are mainstreamed now. People in
ECVs/wheelchairs may get pulled out close to the ride, but if they do, their wait is often longer than the standard line. Despite a common misconception here on the DIS, no one gets front of the line pass anymore, except Make a Wish Kids. For hidden diabilities people may get a GAC, but even they are not front of the line pass. They're used mainly for autistic kids and people who can't wait out in the sun and may allow them a different place to wait away from crowds or may allow them a different entrance. Sometimes they get to ride sooner, sometimes not.
Another thing is that GACs are used only for rides and shows. They can not be used for buses. A person with a GAC would just have to take their chances with everyone else getting a bus, so there would be a good chance she'd have to stand on the buses. However, an ECV or wheelchair will usually get you on a bus before everyone standing in line. (If there are more than two ECVs/wheelchairs waiting or if one is already on the bus, you have to wait for another bus.)