Review Journal article on the change
Causuarina casino name dropped for Max Casino | Las Vegas Review-Journal

Also, per the Las Vegas Advisor:

Max Casino Giving Away Money: If you were a member of the Westin Casuarina's players club, and you go and convert your membership to the new Max Casino's program, you receive a $5 chip for your loyalty. Simple as that. No strings. New sign-ups get 10 bucks in slot free play.