Stay at the GN 6 times a year for a week at a time and the $20 tip worked for awhile but the last year it is Voodoo to even offer it. They will not accept it under any circumstances. In fact aobut 2 trips ago the girl remarked are to trying to sit me up to get fired. I think itis ashame but they really had a real bad deal there aobut 1 year ago. For a city that is built around tips makes no sense.