I called CAS again and the rep said that you can apply two myvegas per reservation, but I asked if she was sure and she checked without another team and came back and said it's only one now. So the system clearly still allows it and some reps don't know about it the change, so if you keep calling you may get a rep that puts two. The terms on the coupon have not changed over the past several months so I'm not sure what is going on. The certificate is tied to a person's name.