Comment by silvester23

> Here it's often seen as a little sarcastic or teasing as there's a tiny culture implication that it means they didn't prepare enough.

I have always thought the same thing about "Good for you" which I think would commonly be translated as "Schön für dich". You cannot possibly say that without sounding sarcastic.

Regarding "Viel Glück", I usually use "Viel Erfolg" when I'm being sincere.