I think you're kind of missing the point of waiting tables. May I suggest that good table service lies not only in serving the meal which is prepared in the kitchen, but also in assisting guests in deciding what is the best meal for them. Maybe you don't ever need any assistance in that regard, but some of us do, and we show our appreciation at the end. Not so complicated really. Our entire food service industry relies on us to support it, and to demonstrate our appreciation. I hope that demonstrating appreciation never goes out of style, because it is a cornerstone of well-being.