Join Date: May 2004
Location: formerly Gold now Diamond, formerly MSY, now LAX, formerly NW, now DL
Programs: Hyatt Plat, Hilton Gold, SPG Gold, Delta Diamond/1MM
Posts: 4,635
I've never been asked of this by NW. I've often bought tickets on my corporate and personal cards for other travelers so don't think it will be an issue. I have had to show this on online books of foreign airlines though when booking online and having to claim the printed ticket at the airport prior to check in.