I've never had a Marriott rewards account (is Bonvoy the only one), and I couldn't tell from their website, so I turn to CB's collective wisdom. Do you earn points (and can redeem points) at any of the hotel brands owned by Marriott? Or are my points for Courtyard, er, I mean Ritz-Carlton, only valid at the brand? Or can I use my Ritz-Carlton-earned points to redeem rooms at Courtyard, or W, etc?