As a Marriott Platinum Member I have enjoyed the perk of having United Airlines Silver Status through the RewardsPlus Program. Now thanks to the Marriott SPG merger I'm now also a Starwood Platinum Member which means I can take advantage of Starwood & Delta's Crossover Rewards Program.
First I went to SPG's website to get more details of the program but actually found that Delta had more detailed information about the Perks of the Crossover Rewards Program for SPG Platinum Members. Here is what I found:
1.) Extra Points - SPG Platinum and Gold Preferred Members will receive 1 Starpoint per dollar spent on DL-marketed tickets (excluding taxes and fees). Special fares often referred to as unpublished fares including, but not limited to, consolidator fares, tour, groups, merchant marine and cruise packages will earn 500 Starpoints per leg rather than 1 Starpoint per dollar spent. Corporate sales, military, and government fares are eligible for Starpoints but will earn either 1 Starpoint per dollar OR 500 Starpoints per leg dependent on the organization's contract with Delta. Tickets booked with Online Travel Agencies including but not limited to Orbitz, Cheaptickets, Expedia, Priceline, Travelocity, Hotwire, or their subsidiaries will not be eligible for Starpoints. All tickets must be eligible for mileage accrual with the SkyMiles program based on SkyMiles program rules in order to be eligible to earn Starpoints. Starpoints will be posted to your SPG account for each completed segment within 4 to 6 weeks after the activity date.
2.) Free Bags- Benefit is limited to SPG Platinum Preferred Members who are not also SkyMiles Medallion Members. Reservation must include the SPG Member's SkyMiles account number. Fee waiver also available for up to three additional passengers traveling in the same reservation as the SPG Member. Maximum four waivers per reservation. Waiver is only for normal first checked bag fee, if any fee applies, for a bag that is not overweight and not oversize under Delta's applicable rules as set forth in Delta's contract of carriage. Additional checked bags will be subject to the applicable baggage fees as outlined by Delta's rules and the purchased fare as set forth in Delta's contract of carriage. The first checked bag fee waiver will only be applied on flight segments which originate on a Delta or Delta Connection ® carrier when you check-in with Delta for both a Delta marketed and Delta operated flight. Codeshare flights are not eligible. The first bag fee waiver will be applied to the reservation at check-in when checking-in with Delta.
3.) Priority Boarding- SPG Platinum Preferred Members will receive Zone 1 Priority Boarding on Delta flights. Reservation must include the SPG Member's SkyMiles account number. Priority Boarding is also available for up to eight passengers traveling in the same reservation as the SPG Member. Maximum nine passengers per reservation receive Priority Boarding. Priority Boarding will only be available on Delta and Delta Connection ® carrier-operated flights. Delta does not offer Priority Boarding on Delta Shuttle ® flights.
4.) Priority Check-In- SPG Platinum Preferred Members should show their SPG card to gain access to designated Silver Medallion and SkyTeam® elite check-in areas where Delta offers this service, which currently includes Atlanta, Boston, Detroit, Los Angeles, Memphis, Minneapolis, New York City-JFK, New York City-LGA, Salt Lake City, and Tokyo-Narita. In airports where Delta doesn't offer designated check-in for Silver Medallion and SkyTeam elite customers, the Sky Priority ® check-in lanes should be used.
5.) First Class Upgrades- SPG Platinum Preferred Members are eligible for day of departure Complimentary First Class upgrades on paid tickets. Basic Economy (E) fares are not eligible for paid or complimentary upgrades, regardless of Medallion or other elite status, for flights flown on or after February 1, 2015. For full terms and conditions related to Unlimited Complimentary Upgrades visit delta.com/medallionterms
If your now SPG Platinum and fly Delta you should definitely sign up for Crossover Rewards: https://www.delta.com/profile/spgLanding.action