Sometimes you wait a long time for the special cars...and the wait time will also depend on how many wheelchair parties are in front of you, too. We have waited as long as 15 minutes after getting to the special loading area...other times, it was just a minute or two. If you have fastpasses, you can take the wheelchair or the
scooter in through the fastpass lane, too...same thing, you'll get sent through the side door at the bottom of the steps.