Hi, we did this tour a couple of weeks ago and it was fantastic. It only takes a few minutes to get used to the segways (although for a moment there I thought I was going to crash it) and then you spend the next half hour or so doing the safety course, so they can make sure that you will be ok before going around the park.
Lots of update information given to you by your guides, like the California Dreams movie is going (with Whoopi) and will be a Little Mermaid ride, How Soarin almost didn't happen as the imagineers almost gave up on it and the hidden mickeys etc. (did everyone know that there is a hidden mickey on the golf ball in Soarin?)
You then get a group photo and the pin. We would highly recommend the tour.