Originally Posted by
trainman74
The bed lengths have been mentioned in this thread, but not the widths: the lower berth in both the regular bedroom and the family bedroom is 3'4" wide (the upper berths in both types of bedroom are 2'4", which is the same as the lower berth in the roomette). By way of comparison, a standard full-size mattress is 4'6" wide. I'd say two adults sharing a regular bedroom lower berth would have to be relatively petite and very friendly with each other, and two adults attempting to share an upper berth would have to be on their way to a contortionists' convention.
A twin mattress is 39" wide = 3'3", basically the same size as the lower berth. I know I've managed two people in a twin bed before, but as you said, they would have to be very friendly-like.