fifty dollars in tips a day doesn't seem outrageous to me; a lot depends on what you are doing. If you are eating expensive meals, tipping adds up fast. Also, you tip the cocktail waitress if she brings a drink; since she pays for the drinks, this is her only way to get ahead on the cost. You'd tip a bartender in other cities. You pay the valet who brings your car around...usually 3-5. In most major cities, you are going to pay 10-20 to have your car parked, plus tip. Generally, if I am playing a table game like blackjack, I will tip the dealers now and again. Some people never do.

I agree that it is a pleasure to go somewhere where tipping is not expected or part of the compensation, but in the US generally, tipping is part of the expected income of folks in the service industry. I don't think LV is really out of the norm in that regard except that there are a lot more people who are in the service sector.