A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
Maybe a majority of Marriott guests don't do MAGC because they aren't eligible for it: They're not Bonvoy members, they're only staying one night, or the property doesn't offer or publicize MAGC.