forgive my ignorance, but I booked a domestic ticket for 4 of us under my name to ensure everyone gets the 2 free bags @ 70lbs each and what is the policy about upgrades? do they allow for all 4 of us to be upgraded if available or is the companion upgrade limited to 1 and if it is, is there still a way for 2 of us to get the upgrade without having the others lose their free bags (as they dont have status or delta cards)

thanks