Pardon my ignorance, but I just changed my flight online due to a delay on the the inbound and noticed my SEA-MSP flight is now booked in full-fare Y (yah more AS Miles!) but it also allows me to choose a E+ seat for free. There is only one left, a middle, vs a preferred seat at the window and a preferred seat in an exit row. I'm leaning towards the exit for the extra space but I'm guessing I don't get the priority boarding and snacks, etc.
Don't think its worth it for a middle seat on a 3hr flight. Opinions?