I was there a few months ago and was chatting with on of the FD people about MAGC. She said it was a union issue, and so they don't offer it, and likely never will.

She also mentioned that the hotel has one of the highest percentages of elite guests in the SPG system-- maybe close to 75% -- so don't expect many upgrades here.

Also, to answer the person a few posts above who asked about the SPG Business card access to the Lounge, it worked just fine for me.