"Because this code is widely known, it is hard-coded into IHG's auditing software to trigger a request for ID. The IBM code often has a bigger discount, so hotels are inclined to ask for IBM ID at check-in. Staff ID is required, otherwise the best available rate will be applied."

"I did check and my companies corporate rate allows it to be used by employees on vacation etc. hence no issue when I turn up in Koh Samui on a corporate rate! Not sure about using the rate for contractors but I have definitely been booked on an IBM rate consulting at IBM, in fact they insisted on it."

"Usually with any Hotel, if you are carded and cant produce any ID that enables you to get the rate you booked at (using a code) then be prepared to being charged Rack Rate."