"IBM Taiwan's Hyatt code (52718) is specific to IBM's Taiwan operations. Hyatt Asia-Pacific properties enforce corporate code verification near 100% of the time per FlyerTalk community data. "Andaz Tokyo asked for badge, business card and email" — this pattern applies broadly across Asia-Pacific Park Hyatt and Grand Hyatt. IBM Taiwan is a major presence in Taipei business travel; Grand Hyatt Taipei has been documented requiring corporate ID. IBM's standardized physical badges are well-recognized."

"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 guess I just don't see this. I'm not saying rates never changes, but if it really changed every time someone booked a corporate rate, then the rates would change constantly. I can't say that I see this too often or ever. Also I doubt there's enough people doing this to have a huge effect on overall occupancy anyway."