When you took the train, did you have kids? Were the seats nice enough that you could have slept in them? presumably there are more people in seats than have rooms so I assume they do okay?
I'm a bit nervous doing an overnight in a common space with a 3 year old especially because I haven't seen the train layout.
I wonder if there is any video on
youtube? hmmmm

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Check out the Amtrak website. They have lots of good info and virtual tours of the sleeping accomodations as well as other information that you may find useful. Even if it doesn't end up being what you chose for this trip, it may be something to consider in the future as it is a fun way to travel.