It used to be that 10% of the bill was a standard for food and beverage service staff; then the standard became 15%; then 18%; and now it seems to be up to 20% is expected in some places. Is it that restaurant food and drink prices haven't risen as fast as the prevailing wage demand of workers in the food and beverage service sector, or have things gotten completely out of hand? It sure seems that way to me when food and beverage service staff are no better now than they used to be during the past 3 decades when tipping expectations weren't as high as they are now.