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
I have gotten upgrades when I use an AmEx Plat charge card at checkin, presumably because the agent does not realize that my reservation was not booked through FHR, even though it might have been made by AmEx Plat card travel. This would apply to a set of higher end hotels.