Thank you GALSews for your comments. Can you tell me if you were actually on the Aqua or one of the other Prima class ships? I would hope they didn't change the policy for the Aqua.
Cruiseny4life, thank you and that makes sense to me given how the Joy was set up. Part of the confusion I think is that they are labelling the deck 16 as the Haven sun deck as well as the sun deck on 17. So the snapshot you provided could possibly apply to deck 16 as well since they are both called haven sun deck.