A few friends went down to see STS-126.. the wind was blowing like crazy. They heard the SRBs, but none of that "popcorn" crackle. They saw it perfectly, however, from Titusville, about 12ish miles from the pad. If you want to get as close as you can, get LTT tickets, I believe the only people that can go closer are press. I'm not from the KSC area, but I'm also planning to see a launch before they are grounded.