We were on the Diamond last July and did the Adventure Kart Expedition while we were in Ketchican. My husband drove the whole time, we could have switched at the half way point - he was enjoying it too much. There are only about 20 karts that go at a one time, each holds two people. So you will need to sign up quickly if that is what you want to do. It wasn't muddy while we were there it actually was a nice sunny morning. It is bumpy so if you have back or kidney problems it isn't the thing to do. It is really pretty where they take you riding, beautiful views of the country side. We would do it again. Hope this helps you some.
