The return flight, MIA-IAD, is a 777-200. I will defiantly upgrade to business.

I received free upgrade certificates, which I would be using.

If I didn't upgrade, I would trade them. There is really no use, because I would only have 2, and I'm a teenager. This is a mileage run, and they come once in a blue moon for me, so they would be no use unless I upgraded to both ways, or traded them.

What would you do?

BTW- Sorry for the lack of information.