I know it's a subject that has been beaten to death, but I'd like to hear opinions of others who order bottles of wine with dinner. Do you consider the tip differently for the wine than for the food? I've always been told that a flat $5.00 or $10.00 per bottle, depending on the price of the wine. I'm sure a server might not agree with this thinking. All that said, I usually tip 20% on the total bill, even for so-so service. Am I an idiot?