Has anyone ever done this? I am plannig a trip - want to stay on the strip- preferrably mid-south section ( thinking Excalibur ). But if you choose the option of paying before you know the hotel they do show some great deals on 4-5 star hotels ( where as the Excalibur is only a 3 ). I am just skeptical - as i do not want to be tooo far down South !! Any thoughts- experiences etc?