It might cover the basic rail fare which each passenger (including each sleeper passenger) has to pay. The "accommodation (sleeper) charge" - includes up to 2 passengers for roomettes and bedrooms and is generally not eligible for a discount.
Might be best to query Amtrak regarding this.
John
Last edited by FrensicPic; Jun 3, 2017 at 4:34 pm
Reason: added my name