I went today and they were up to three shows. The first one was at 12:00. Overall I thought it was a good show. I enjoyed the stunts and I loved watching the reactions of my kids when they saw it. Like Dave said in his post, no jet skis, and the pyro suit failed to ignite here as well, but it was still cool to watch. And like they said, this is all dress rehearsals so things aren't always going to go right. And at least what didn't happen also didn't cause injuries to anyone, so who can really complain? It is definitely worth it to go see if you are down here. Just grab a FP and go to the show. Most seats seem to be fine, but like you get at some staduims, there are support columns that give partially obstructed views if you are seated high up, but some of those higher vantage points give you terriffic views of all the action if you get to the right spots(like just to the right or left of said supports).
Edit: Oh, and they did mention that the pursuit cars(the black OPEL cars) are greatly modified. Stripped of most weight and with a 1300cc motorcycle engine in place of the factory engine. Cool technical info there.