As part of their weekend escape to Carmel ("Roller Coast," July 21), Barry Zwick reported that he and his wife dined at the Rio Grill. He said he didn't have a clue that dinner for two would cost $101 with tax and tip. Actually, he should feel well charged. He and his wife split two appetizers, each had a main course and the sommelier attended to a bottle of wine. Figuring the meal and the wine at about $81.00 and tax and tip at $20.00, this seems extremely reasonable, especially since Mr. Zwick claimed it was one of the best meals he had ever eaten. This leaves me with only one question: Did he know to tip the sommelier?