The train was one of the best things my friends and I did on our trip to Fairbanks a few years ago (2nd only to a dog sledding school). Went to games in Fairbanks Fri, Sat, took the train to Anchorage Sunday and flew out of Anchorage Monday. I think there were maybe 7 people on the train in Fairbanks. Got to talk to the conductor, spent most of the time hanging out in the dining car with the cook. The train takes all day, so bring a deck of cards, a good book or similar. Because of the limited number of people on the train, they actually did stop for pictures, wildlife if they saw it, etc. It was a great experience, and I imagine very different from the train ride in the summer.