Update. I did ride the Alpine slide. Not much to write about. I thought you would put your weight in the direction of the turn (like on a motorcycle) but was told not to or the sled could jump track.
So, at every turn there was a slow sign, I slowed. I think I slowed too much plus the slide was made of alternate concrete and fiberglass in sections so it was not a smooth ride. However, the two seated ride up to the top of the alpine ride was fun. Anyway, beautiful country, cool weather. I had a good time but 17 days was too long. Also ended up on a red eye coming home, they changed our flight, I was miserable. Now if I can just get used to CST again. Those two hours made a big difference for me.
Ana, I did get to see the pics. No way would I put myself on that bridge. The one I was on was much larger and more secure!