Received a buddy pass from a family member and will be using it for an international flight. I've read around and talked to some people, and all of them usually got booted up to F (especially on international flights) as long as they dressed nicely. Anyone have experience with buddy passes?

I'll be flying to HK for business, and if I don't have a decent chance of getting first with a buddy pass, I might as well just buy it.

I'm flying Delta