First off, I skimmed the other pages so if I missed something, please excuse due to time limits.
WL, I love but only during the colder months of the year, and being from Canada I don't see the atmosphere being that much different than what you experience daily.
AKL, I know it is loved by many and I am the first to appreciate the detailed themeing but it just does not do it for me, romantically.
For one other than the pool there is no water, no beach, very few if any blooming plants, nothing tropical, rooms are dark, no walkways and benches to sit and admire the view. Also with the opening of the new DVC addition, Mara is going to be even more crowded than ever, they don't have a Counter Service in the new DVC village.
To me the Caribbean is one of the most romantic areas of the world, therefore a King bed at CBR gets my vote.
I really like CSR too, but you said you were not excited about the food court area.
So unless the Polynesian or Grand Floridian were an option, then CBR or CSR would be my choices.