I am a FO college student flying the above route on 23 Nov. Seems to have quite full availability up front, with only two elite members including me fighting at the back end. Well, it's more than 70 days away before flight, and I was wondering if I should use my pesos to upgrade, or cross my legs and possibly hope for an upgrade. What would you advise? Anyone with specific flight experiences?

Further, what do you all think of bump chances on that day before thanksgiving?

I am guessing also BNA-ATl-RDU-ATL-LGA would be difficult op-ups on the 18th Nov since RDU & ATL are heavy elite bases, wouldn't it?