As another poster mentioned, make sure you schedule it early in your trip in case it rains. You WILL NOT get your money back. I booked this for my son last Janaury for our next to the last day and sure enough it rained. They would give you a raincheck that you could use at any RPDE near you, anytime within the next year, but would not give you your money back, nor would they let us transfer it to my other son, who was going to be at WDW in Sept. They said it was bought for my elder son and that he was the only one that could use it. We were lucky and my son was able to use his raincheck at the Texas Motor Speedway this past April. However, there were some people at WDW that did not have a RPDE near them and simply lost their money. One guy had bought the 'King's Experience' and was very upset that he lost over $1200.00.
By the way, when we went to the Texas Motor Speedway in April, my younger son tagged along to watch his elder brother and at the last minute we were told that they had room if he wanted to drive, so my two boys round up competing against each other. My younger son had the best overall time, but my elder son finally beat him and had the top speed on his final lap. They still talk about how they beat each other and how much fun it was. Afterwards there is a plaque you can buy that has a picutre of you standing next to the Richard Petty car and you inside the car you drive. The plaque is like $70.00 I believe, but worth every penny.