I just called this number and they said I was rated. There can be significant savings and worst case scenario is they say no.
I would have your friend call Casino Royale and check. If your friend had their card in the machines while playing, there is a chance they may have some history. There have been reports of players who are not part of Casino Royale getting offers via email or through regular mail. The Casino Royale program is in a bit of a flux right now.
