Cat A and AA on Oosterdam question

[Southwest]

Does anyone have information about the size of the balconies for Category A and AA at the very back of the ship on the Oosterdam? My travel agent called Holland America to ask and was told they are all 47 sq. ft., but I read in a review that the Category As at the rear have larger balconies. If this is true, what deck were you on? I appreciate any help you can give. Also, we have never been at the very back before, any conversation about whether this is rough or smooth sailing would be appreciated as one of our traveling companions is nervous about being seasick.