Hello everyone. I am a relative newcomer to this forum and have learned quite a bit from reading posts. However, I have a question regarding the differences of these 2 programs: Marriott Rewards vs Ritz-Carlton Rewards. As best I can tell, you can sign up for one or the other, but not both. Both earn points which can be redeemed at Ritz-Carlton or Marriott properties. I guess what I really want to know is: Why 2 programs? What (if any) are the differences? Any clarification would be greatly appreciated. Thanks.