The Marriott Rewards Program has been combined with the SPG Program to become one program. You can get all the details of the combined Marriott/SPG Program here.
Achieve SPG Elite Status-If you are an SPG Elite Status Member, you earn more Starwood points on your stays.
You earn more points as an SPG Elite Member
Gold and Platinum members receive three (3) Starpoints for each dollar spent unlike the regular Preferred members that receive (2) points.