They should. Just this morning, as we checked out of OKW we paid our charges with the reward dollars we had redemmed. I kept a running tally of the items charged to the room card (had put a credit card on it at check in) and knew when my reward dollars were used up. I was within .06 of the total amount that I had. It was pretty cool. I will like the cards better because the certificates didn't fit well into my fanny pack but a credit card type will be perfect!! (The tip about charging items to the room and paying at check out was from someone on these boards - a great tip!)