I'm flying BDL-IAD-EZE and back next week. I have the E+ yearly pass and have picked a row J seat on the IAD-EZE and EZE-IAD legs that don't have anyone currently sitting next to them with the idea that i might have no one next to me...however, realistically there are lots of people who will be moved up to E+ from E and unassigned seats such that it's really no more likely i'd have no seatmate than if i just pick another row B or J seat further towards the front...what do you think? In either case, I kinda assume it will be a mmostly full flight regardless.