Moderator, El Al and Marriott Bonvoy, FlyerTalk Evangelist
Join Date: Feb 2005
Location: SIN
Programs: SQ PPS, Mar LTT, Hyatt LTG, AA LTG, LY, HH, IC, BA, DL, UA SLV
Posts: 12,155
You simply tell them you would like to earn Bonvoy points from your spend. They will either collect your Bonvoy information and scan your QR code which can be found in the Wallet section of your Bonvoy mobile app. It is not related to what credit card you are using.