I wouldn't let the comment about the bed being put up during the day worry you, you just pull it down when you want to sleep on it - you don't have to wait for the maid!
Also you may not get much of a choice - the brochures always
say rooms may be in an L-shaped or parallel configuration but I think there's very few outside cabins in an L-shape.
I have had 4 outside cabins on Destiny, in-laws have had 2 - all 6 have been L-shaped configuration. We have also had 4 late check out cabins which were inside, and all 4 were parallel configuration so you may not actually get the choice unless there are a few and you manage to pre-book a parallel.
Actually, I would be interested to hear if anyone has had a parallel configuration in an outside cabin on Destiny. Just out of curiosity!