Don't book tour through NCL, get off the ship and head to M&M Tours. It's MUCH cheapers, and amazing!! We rented Jeep 4x4's and drove to the Yukon for the same price as the train. Plus you can see the train tracks from the route you take and David, the guide, is awesome!! You can get 2-4 people in each Jeep, and if it's only 2 of you, you can still get your own Jeep. The guide tells great stories and facts through the cb radio in each jeep!