Heh, so much technical discussion I forgot to talk about the experience itself. Which is sort of appropriate, I guess, since my focus on taking photos did change how I perceived the whole event.
It was a long cold night. I left home at 10pm to make sure I didn't get stuck in traffic, as my info package said I had to be there by midnight. The visitors center and shops were open (they made a mint on coffee alone!). However, by the time I got there, a few people were already camping out in line for the busses to the causeway. It was first come, first on, for the busses. Since I absolutely wanted to be at the forward ropes with nobody in front of me, I got in line too. Just about everyone had folding chairs, blankets, and I saw a few air mattresses where people literally bedded down for a few hours sleep! We were told we wouldn't board the busses until 3:30am, so about 2:30 I went to the rest room. And just about had a heart attack when I returned to find the line area empty and no sign of my equipment. Fortunately, the people I had been talking to had picked up my stuff and headed for the buses (another line as it turned out, but I didn't know that at the time). We had talked about how they too anted to be right up front along the water, and figured that if I missed the bus they were on, I would find them out at the causeway. A few heart palpitations later I caught up to them in the next line. All in all, I did prefer what they did to just leaving my stuff there for anyone to pick up. So, another 45 minutes waiting before getting on the busses.
On the drive out, the driver told us that there were going to be about 5,000 people on the causeway. I'm really glad I got in line early, as it filled up fast! I did indeed get a spot right up front, so I set up my chair and tripod and stared to click away. Being able to stay sitting later during launch without a doubt enabled me to get the later shots during ascent. There is no way I would have been able to do it standing up.
I definitely can understand the advice given that if this is your first launch, just sit back and take in the experience. My focus was on photography, so I ignored that.

; I have seen launches before, just not from that close. It was an incredible experience, but I was really only half way taking it in. The whole time during launch I was looking thu the view finder, checking framing, thinking about where the shuttle was going to be moving, when to take the camera off the tripod, when to rotate the camera to portrait position, checking if the focus was still sharp, when the SRB separation was coming, etc. In a way, I didn't really "see" the launch, I saw a series of still images.
Just at ignition, the sky was starting to brighten up. By the time the SRBs had separated and it was on only main engines, it was high enough to be in the sunlight. The exhaust was lit up by the sun, and it was gorgeous. I tried to get a photo, but it was just too faint. The lens combo and zoom and my camera just couldn't capture it. By this time the contrail clouds were lit up by the sun, and they were absolutely beautiful. I tried to get a few photos, but by this time they were telling us we had to get back aboard the busses. Some garbage about acid produced by the SRBs drifting our way and we needed to reboard the busses. Balony. All the concession stand people were still there, as were the security guards, and everyone else working there. We got back on the busses, then sat there for another half hour before driving back to the visitor center.
With all the traffic on the roads, my slightly over 1 hour commute there turned in to a 3 hour drive home. And it was absolutely worth it. If I can, I'm going to try to catch a day time launch from the same place.
Erich