Hello, I have a question about the phrase "que te/le vaya bien" - I know what it means and that it's a farewell type of phrase. I can't figure out, though, if it can be used by both people in a conversation in a situation where one is staying, and the other is leaving. For example, if I'm the customer in a store and I'm the one leaving, can I say "que le vaya bien" to the clerk, or would they be the only one who says it? I have read that the person staying is the only one who says it. I have also read that it's fine for the the person leaving to say it (maybe it's acceptable, but awkward?). So, which is it? Does it vary by region? Also: if it's the case that I, as the person leaving, shouldn't say "que le vaya bien", what would be the more appropriate thing to say? Thank you!