My twin boys just did the new Exotic Racing Experience in April. I would allow at least 2 hours maybe even 2.5 hours. When they did it, there was down time(standing around) waiting for the next part of the experince. While you are waiting outside it can get loud if the Richard Petty driving is going on at the same time. As far as if it is worth it, that is hard to say, it really depends on the person and if they really want to drive one of the cars. My boys loved it and they were able to drive a car they would never be able to any other time.