Another vote for don't miss it. I'm really not good with heights, used to have terrible vertigo. getting to the end of those bridges was such a wonderful feeling I wanted to go back to the start and do it again. half way through I started taking pictures of my view and the crocs below. it was amazing.
If you can't handle it our guides did mention there was a way for people to miss the section - but they would miss out on the crocs and go straight to the vehicle loading area for the safari portion of the tour. Honestly, I felt so safe. Disney does a great job of making the bridge look unstable but there were no points that I felt like I was at risk. Its an amazing experience.
Thanks for all the great advice! We did our trek on June 11th and had a blast. Bridge was a little scary but I would do it again in a heartbeat. My daughter had an amazing time. I would highly recommend it as a must do activity.