All the ones I know that people have done you are massively restricted on how far you can rev them which means you dont get to enjoy the performance or the sound, and they wont let you push the handling either.

Its more for people to be able to post on facebook they have done it or to just give a slight hint to what the cars are like than to really drive them.

Hope you can go and just enjoy the special feeling of the cars etc, cause if you are going thinking you can drive like a trackday I think you will be really dissapointed.