Not exactly. This is how AAA 'discounts' their tickets. They are regular price tickets but include free parking. Occasionally I see people report actual ticket discounts at AAA (usually in Arizona

) but most of the time its just the free parking.
So showing your AAA card isn't going to get you free parking. But if you buy your tickets through them they will say on the bottom that they include parking in Mickey & Friends (though others here have reported that you can park in Toy Story too).