Amtrak Guest Rewards - 2012 AGR companion coupon

I have been select plus for a few years. I only take the train for work. Every year, with the S+ package, I give the coupons to my inlawns, as they can use them.

This year, i noticed that the upgrades specifically state they are transferable. however, the companion coupons, dont specifically state they are transferable, but at the same time dont say they must be used by the individual on the front. They are just silent on the topic.

Any thoughts on if my inlaws can use these? Appreciate the insight.

My parents just used my '12 companion coupons on a trip on the NER going up to Boston, and my dad didn't mention having any problems with it. Then again, the ClubAcela attendants that I've interacted with in Philadelphia are usually pretty lenient. Either way, I don't think that they should have any problems.