Our upcoming trip at POR, both DH and I will be using a
scooter, and since we purposely booked a 5th sleeper room to guarantee we'll be in the AB section, we definitely need a first floor room.
Funny story, back in 2013 we requested 1 thing, adjoining rooms at POR because we'd be sharing food etc. Got to our rooms and they weren't adjoining/connecting so we walked back to the front desk and inquired. She said "why did they do that? There are lots of adjoining/connecting rooms available!"

So I truly believe it depends on the person assigning the rooms.