http://www.lasvegasdirect.com/talk/g...ighlight=trick

we had some great discussion about this at an earlier date...

To recap... I have used it several times.. sometimes it worked other times it did not.... Flamingo (airport Checkin) worked, upgraded to a top floor suite. Aladdin(now Planet Hollywood). worked upgraded to a suite. Tropicana worked. upgraded to a higher level tower room from a courtyard booking. Sahara did not work.... guy said there is no such thing around here.... In other words he was being watched by his superior.

Hope this info helps.