I just got back from Vegas, and stayed at Paris. One of the very few complaints I had about my stay was actually their room keys. Their room keys are identical to the gold Total Reward cards. I'm Diamond, but my wife is Gold. So, she threw down her room key instead of her TR card on the BJ table to get rated on more than one occasion. I saw it happen several other times at Paris & at Planet Hollywood, same key design. I guess it is the same way at other CET properties as well.