They are identical, think of the price difference as a location premium. Some people want to be higher on the ship, and are willing to pay. Just depends on what you want. But layout and size wise, they are same.
I wanted a cat. 6 for my upcoming cruise in August, but by the time we called to make our ressies all cat.6 rooms were sold out, so we wound up getting a cat. 5 room, and had to pay the extra $$.
We were originally booked in a cat 10 for the Nov 30th cruise. Having a secret porthole made it a cat 8.
When we rebooked we booked a cat 6. Hey, we turned that disappointment into a verandah !
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