The Palmetto restriction on the upgrade coupons was lifted for 2013 and beyond. However, companion and upgrade coupons cannot be combined for the same reservation.I have never used one of my companion coupons but have given them to friends. I assume that you have the same ones that I have. It is my understanding that they are valid on Acela. I was told by a friend to whom I gave a companion coupon that they could not use an upgrade coupon for BC on the Palmetto, but I believe they were able to pay and get BC.