Wwolfgang, it is my understanding from what I've heard first-hand, read, or seen in documentaries that Indians/Native Americans actually can have several names in their lifetimes and some of those are given. I saw an author on the tv the other night, describing how his parents took him to Devil's Tower as a baby and how the tribe then gave him a name reflecting that journey early in his life.

I don't like "have a nice day" that much either as it is so vacuous and usually said without thought, BUT I've never thought of it as politically correct. It's always seemed like a marketing thing to me...be nice to the customers, wish them well even if they don't like it.:-)