The first time I was upgraded from economy to business class and was offered wine, I asked: “How much is it?” The stewardess – it was the 1980s – looked at me and said: “Oh, you really don’t belong ...

Since the end of last year, Daniel Post Senning — the great-great-grandson of American etiquette queen Emily Post and co-president of the Emily Post Institute — has been gobsmacked by the growing ...