"Pfizer holds two Marriott codes (4899 and PFZ, with PFE as a third variant). This code duplication reflects Pfizer's large managed travel program. FlyerTalk notes: "In the US and Canada, never asked to show a work badge. Overseas — they tend to follow the rule by the book." Pfizer's dual-code structure suggests a formally managed travel program that may share usage data with Pfizer's travel desk. Risk is medium — consistent with other pharma codes at full-service Marriott properties globally."

"I wouldn’t mind that at all. Credit Card companies have super weak security and it’s very easy to defraud them - they just pay our money back, and counts that as losses so we’ll sure up about it and keep using the cards What I mind is that the mobile check-in is basically a lie. Marriott is deceiving me. Random hypothetical people that might or might not stole my credit card are not. Hilton works just fine btw"

"I now always make it a matter of course to carry documents (business cards of my contacts, e-mails requesting my visit etc.) from my host company when I travel. This has always proven sufficient for the few times I've been challenged by the front desk clerk."