There are two things that I've learned in life that I think are incredibly poignant and true and that I hope to impart on my kids. I wish I could claim to have arrived at them on my own, but the one I read in the bible, as my wife calls Men's Health; and while I'm not sure where I picked the other up at, I know its origin isn't with me.
So here we go:
1) There is a difference between being frugal and being stingy. Know the difference. A frugal person eats Ramen at home and skips the dinner at the swanky Ramon's Restuarant. A stingy person orders the surf & turf at Ramon's and then wants to split the bill equally among all the diners.
2) You should never be shy about what you like, but you should never under any circumstances be finicky. Find that drink, or meal or entertainment you like and make it your signature; but you should never put off if it isn't available. "Real men (and women) are discerning, but they're not disabled if things are not just so."
I hope you three realize them earlier in life than I did.