Have him phone the hotel. If he's going to be gambling then tell your friend to ask for a slot host there. Definetly phone and ask though as that is such a long stay.

edit : I've never used priceline but apparently the Venetian can be had for $99 a night. Not sure if your friend would be able to get 17 nights though.

[This message has been edited by BCMike (edited 07-30-2003).]