My husband and I did this together, and we can't praise it enough. Our tour guide, Blake, has started this going recently, and he is a fantastic guide. He was knowledgeable and very enthusiastic - he was keen to make sure we had fun, and seemed to have fun on the Segway himself as well.
We really enjoyed this, and would recommend - if we are ever back in the area we'd do one of the other routes he offers. Great fun!