Hi again,

I got most of my experiences at CDG airport. As a Platinum member, I always received very nice upgrade, even amazing sometimes.

I could not give you clue about rentals in Strasbourg.

Maybe, in order to get a better treatment, you should check if you could bnot apply to platinum membership. I got it because of my Air France Platinum card. I know they match platinum for top-tier members of Hilton Honors, Miles and More....