I will be travelling to BOS with my wife and two little kids: 2 suitcases + stroller base.
I currently have a Emerald Club Midsize Reservation for the Emerald Aisle. I don't need anything fancy, but of course I want to make sure I get the 2 suit cases and the base of the Uppababy Vista stroller into the trunk.

Does anybody know what would happen if the Emerald Aisle is picked clean and they only have true mid sizes and we cannot fit the suit cases + stroller into the trunk? Would they just go find a car in another aisle that would fit at the same rate?

Other question: If I reserve the full size, can I still go pick from the Emerald Aisle if I see something I like there better?