My husband and I did the Segway this past weekend on the Wonder. OMG, was it fun! We split the 10 minutes ($15), so we each had 5 minutes. I would do it again in a heartbeat! It was great - easy to use after a couple of minutes, and just fun, fun, fun. Unfortuately, our boys were out on their own at the time, so they missed it, but for 2 47-year-old oldsters (one skinny and fit, one tubby and not-so-fit), it was neat!
Try it!