I enjoy eating out, m'kay? There is variety, decent prices and a generally wider choice than I am used to.
Service is pleasant, a nice smile goes a long way in any country.
But here is the thing ..... When you have brought me my meal, and I am eating, more often than not enjoying interesting conversation with my Wife or family, then I am fine. All is well. I am enjoying my meal, the food is great, the service fine. I don't need anything, and if I should want something, I will ask.
I do not need you to interrupt, continuously, with questions about my general well-being, the weather or sundry other subjects they taught you at waiter-school. Indeed, the size of your tip is inversely proportional to the number of times my meal is disturbed.
Less is more, my friend. Once we clearly understand this, I shall be happier, and you will be better rewarded.
Have a nice day!