Be sure to save your receipt from Ridemakerz,
We went last September, my boys spent $100 each of their bday money on the rc cars. They enjoyed making them but the cars are not good quality,
We weren't even in out room much that week for the boys to play with them, but of course just as we're getting ready to leave for the airport both cars won't work.
We returned to DLR for our December trip and returned the cars for a full refund. I called ahead and spoke with the manager and let him know that I'd be returning the cars.
A friend of mine warned me about the Ridemakerz cars..don't waste your money etc. but I thought we'd give it a try anyway.
Maybe you'll have better luck.
If we ever did it again I would only let the boys make a regular car, the rc motors just aren't made to last.