This was a lot of fun! Once you finish paying you put on a helmet and then you go up the gondola to the top of the hill to begin your journey down the tracks. The service was great except for one little douche who was rude. Apparently missed the memo about the safety protocol to get in the karts. We were supposed to go over a dinky little bridge to the other side in order to get on the carts but it really made no difference. All he had to do was correct us but he's like "no go back and read the signs." It was our first time I don't know why he had to be such a clown.
The speed of the karts are really up to your own personal discretion but surprisingly it goes pretty fast. They have a few obstacles and turns which added to the excitement. It's safe for all ages. I went twice in a group of 6, each costing $16. I would recommend going 2-3 times and go with a group so it works out cheaper. Otherwise it would be $15/ride.
Definitely recommend it!