I personally did the 8 lap experience at Loudon in NH (masters graduation present from DW). In a word - OMIGAWDITWASAWESOME!!!!!!!!!

In answer to some of the questions:
- I am not sure if Disney does anything special for the families, but the first two hours I think are pretty boring for the families.
- Yes you do need to know how to drive a stick - BUT - you only need to know how to go up through the gears. At the end they will tell you to just put it in neutral and coast back to the pits. I did not know how but one lunch hour in my friend's car taught me all I needed to know. If you have a driving simulator (i.e. EA sports) and you have the steering wheel, you can practice 'shifting' - getting a rythym for when to shift.
- I seem to remember having to sign a waiver that included the phrase 'race car driving is a dangerous sport and I may be injured or even killed even if I do everything properly'. So if you want to sign, they will let you race.
- They send you out with a pace car. The idea is to keep up with the pace car driver. If you get closer than the desired distance (3-4 car lengths), and you seem to be doing well, the pace driver will actually speed up. If you are going too fast, he will wave at you to slow down.
- In hindsight, I wish I had more time. Just as I was getting the hang of it (and getting through the emotional overload - driving a stock car on a real NASCAR track, going faster than I ever had) - it was over. I would LOVE to do it again.
Enjoy!!! Have fun!!! Turn fast and go left!!!!!