We stay on Disney every year and also have a car every year now and never use it to get to any of the Disney parks as the buses are so convenient. The only time we use it in relation to Disney,is if we have a restaurant booked for the evening at one of the other WDW hotels. It is quite often much quicker to use the car on these occasions and I am quite lucky as my wife does't drink.Yes it is totally free. It costs 12 dollars to park at the non-Disney parks.
It is the biggest name tag I have ever had the reflection from it blinded DH whilst driving so we removed and replace as required.
You just look at all those 1000's of cars in the car parks at WDW and wonder how much money Disney have made, before anybody even enters the parks.WHoa! 12 dollars now to park that's pretty steep. I'm sure on our first trip (1995) it was 6 dollars! I always forget to budget for the parking when we go, i had better remember to now at those prices.... unless we stay on site of course which i am working on