See it once for yourself and decide whether it is worth seeing again. My answer is "no". While there is alot of skill and training involved with the driving of the cars the show lacked a "WOW" factor for me.
As for FP, they day we were there the stand-by line was a walk in (non-existent) and the FP line was all the way down NY street. The FP holders were still coming in after the show had started. Skip FP in my opinion. SO MANY people are getting it for fear they won't get in that they are causing it to be unusally long. . .