This year marks exactly 100 years since the Alaska Railroad opened its entire line! I made the reservation without knowing anything about it, but the badge that was distributed only to those who reserved Gold Star Class had the number 100 on it (I don't know if it's only for this year).
Gold Star is an observation car, with three meals in the dining car and up to two free drinks. There is a private bar at the rear of the observation car, and behind that is an outdoor deck-like area reserved for Gold Class passengers, which you can enter and exit freely. You can take in as many negative ions as you like.
It's 12 hours of enjoying the magnificent scenery of Alaska while slowly drinking alcohol from the morning. I thought 12 hours was too long, but there were moose, I was amazed at the size of Mt. Denali, people in the towns we passed, people on trains going in the opposite direction we passed, salmon fishermen waving at us, and the train stopped and slowed down at the scenic spots, so I think it's worth more than the price.
For meals, you can choose from about three menus for each meal. I had a light meal of eggs and potatoes in the morning, Bolognese for lunch, and beef steak for dinner, and each meal was made with moose or reindeer. The food was pretty good. After each meal, everyone left a $5 tip on the table.
The deli car selling snacks had a high ceiling and was very open.
I definitely recommend this if you come to Alaska.