That is basically correct, but as we were redeeming Guest Reward points, the charge was the same as for a roomette. The drawback for me versus a roomette was that on the top bunk, it was more difficult to sleep with the stops and starts causing my body to roll in the bed against the safety webbing. In the roomette, the beds are aligned parallel to the train, so the only body roll is from the gentler and more constant side-to-side swaying of the cars.