In the past, I have taken several Amtrak auto train rides to Florida and back (Washington DC area). I'm a romantic, and tend to see things on the positive side, but life's experiences have tempered my view of Amtrak rides.
This is my experience:
1) Coach - sleeping in a chair overnight can be tiring on the legs, especially if you're tall, and we learned to take a blanket and pillow for the trip. That gave us more flexibility. If you plan way ahead, you can get good discounts, though.
Meals were the good part and were part of the price, but recently, they've changed. There used to be snacks of bananas and treats. They've cut back on that. Breakfast is very sugary. DO NOT DRINK the orange juice and eat all the sweet stuff during breakfast. By the time you get to your destination, you are drowsy and just want to sleep it off. I learned that the hard way. Started bringing my own food for breakfast. We were supposed to go on a trip in 2020, but due to the pandemic, postponed it. I honestly don't think I'll take another Amtrack train again.
2) Roomette - sleeping in a room with bunkbeds is ok, if there are NO bedbugs. When I woke up the next morning, my legs were riddled with bites. Even though I complained to the manager there, they did nothing. Never went back to a roomette again.
3) One year, at around 2-3am, the train stopped and I found out we had run over someone who had parked their car smack in the middle of the railroad. Everyone was shaken up, including me.
These are my thoughts. Just so you know from someone who has used the Amtrak auto train for several years.