The Family Bedroom does not have a toilet in the room, and remember that one of the lower bunks is child-sized.I think I have it figured out after going to the Amtrak Site. On the Auto Train last year I slept in the Accessible Bedroom with my wife and my WC. Watching her climb into the upper berth with her health issues was a Nightmare, for the both of us. I have balance issues and would have difficulties using and getting to public rooms. That leaves us with the Accessible Bedroom + Roomette or Family Bedroom (transport chair), "Holding it" for 17+ hours, or a Adult Diaper and jug. Does that sound right?
That's some Expensive Roomettes,!FWIW (0.0¢) 2 adults each in a high bucket Roomette on the TE is $1105 more than 2 adults in the same low bucket Bedroom on that same train over the whole route.