Parking is free for guests who stay overnight on property (at Walt Disney World hotels).   For others, it is $14 per carload.  Clearly marked spaces but a lot of them.  Remember to take a picture of your spot so you know where to return, or write it down.  Parking for handicapped visitors can be found by following the blue line at all parks.  Follow the green (sometimes red) line at all parks for those who are visiting on a AAA vacation package.  Sometimes, if you purchase your tickets from AAA, they will give you the parking pass.  It is worth asking!  The pass does not admit you to free parking but rather to parking at the front of each park.