I have booked this trip for May 2008 and looking forward to it. I feel the trip is nicely broken up and I have opted to do the Rocky Mountaineer train as well. I have also booked the Alaskan Cruise ....may be more time for relaxation at this point. I would imagine that on a cruise you could do as much or as little as you want to. It's my first time doing anything like this but nothing ventured, nothing gained!