It really was one of the highlights of our vacation. That a.m. they were saying possible weather problems, so we weren't sure it would happen. We also heard of the possibility of big traffic delays heading to PC but we didn't encounter any problems and got there around 1:00.
Like the previous poster stated, the jumbo-tron had the live news feed, so you could watch that until the blastoff - everyone counted down to 10 and lots of cheering as it took off.
I was surprised how "long" the fire trail was behind it -we watched until it was out of our sight, and then watched the video feed for several more minutes.
It really was a great experience, and it gave me chill bumps to watch it!