[QUOTE=NJUPINTHEAIR;16611486 One can get the RRC but still retain a Marriott Rewards account, I believe. .[/QUOTE]
My assumption is that you retain your points, and promotions currently in the account, then with the RC card, your account becomes as RCR primary account and promotions applicable to you are those offered by RCR not MR ( I think they have $$ off promo now). This is my best guess.