"FlyerTalk documents Samsung codes as remarkable — one user reported 70% off at the Grand Hyatt Hong Kong. HotelCorporateCodes.com rates Samsung as "Sometimes" for ID verification at Hyatt. Hyatt's general pattern: Park Hyatt checks most frequently, Grand Hyatt and Regency occasionally, Hyatt Place/House rarely. Hyatt is described as "notorious for checking for ID," especially internationally. One user documented 50% ID check rate across Hyatt stays in 10 countries, mitigated by self-printed business cards which "worked 100% of the time.""

"We have a personal travel option in Concur and can also use the corporate travel agency for personal travel. Rates usually match between Concur and booking direct with the code but vary from time to time. The PH Sydney dates I looked at were $1,200 (BAR), $700 (corp code), $500 (Concur)."

"I know that my former employer, a very large non US-based multinational company (I am not sure if US-based companies are more careful due to liability issues etc.), doesn't really care whether or not the person using its hotel corporate rates (worldwide agreements with 2 different large hotel chains) is an employee. In fact the company secretly hopes that others (non-staff) use its corporate rate. The name of the game is volume and the more the volume the better the company's leverage on the hotel. That is why it is usually the hotels who insist on asking for company IDs or business cards (which I suppose anyone can print ... though I am not suggesting that FTers should go this route)."