It is FSP Free Slot Play (not FSB). Boothlings said that it is good only at the Rio for locals, and has nothing to do with the local mailing of coupons, but you can find out about it by downloading the new app. They are talking about the new PLAY by TR mobile app -- download it on your smart phone and login with your total rewards account. Then you will see special offers and free play is deposited to your account, and sometimes you must check in a room for it. But PLAY is brand-new, so the people I talked to May be confused and you don't have to just be a local, I don't know.
??? I don't know any more or if I know anything correct....