I got the Rookie Experience for DH as an anniversary gift last October, and he loved it. He's not even a Nascar fan (he like F1 much better), but he really loved driving a car that fast.
One tip that I can give you - if you have a choice of when to book the experience, I would avoid booking it in the summer. You have to wear a fireproof suit during part of the training outside and while you wait until it's your turn to drive/ride along and in the summer FL heat that can be a bit much. When we did it at the end of Oct, we thought it was freezing that morning, but DH and the rest of his "class" were relieved when they got in the fireproof suits.
Also, I'm not sure if they do this during every class (it probably depends on attendance), but they offered a discounted ride along for anyone that wanted to add it at the last minute. So if you are wanting to do both, then I would recommend waiting to book the ride along until you actually get there.
You can let your wife know that there's a 20% discount if you are AAA members. I actually bought a single membership just for the discount on this when I bought it.
Have a great time!!