Since you see it every day, what would you suggest to reduce or eliminate the abuse?
With the GAC cards, we give them the least ammount of assistance neccessary. For example, if guests ask that that they not wait in line, we can give them a "Shaded Wait Area" pass, or a "Seated Wait Area" pass, the idea behind both being that a guest still waits the same ammount of time, just out of the actual queue, where they may be more comfortable. Very rarely do we give any passes that let guests bypass the line altogether, and when we do, it's for a very good reason.
In regards to the stroller issue, I don't think a hight requirement would work, and I KNOW the doctor's note won't happen. We're not allowed to look at a doctor's note. Some sort of descrimination. (And before you ask, YES, we know sometimes CRO will tell you you need one, but they're wrong, and if you bring it to us, we won't look at it. We've called them and they still do it. Sorry.) We've been told, by the managers at Strollers and higher up that they can't keep people from renting strollers because they don't want it to be seen as descrimination. Also, like Rob mentioned, the people who ~REALLY~ need wheelchairs or strollers probably already have them.
We are constantly having to review and revamp the Guest Assistance programs, either because laws change, because guests disagree with them or abuse them, or because CMs are not following the procedures... The GAC cards cause HUGE headaches, and there has been serious thought about discontinuing the program altogether. We don't want to do this because there are some guests who really do need them, but it's tough sometimes...