Aft cabin on a transatlantic?

[PartyAllDaTyme]

We've sailed aft cabins in the Caribbean, and have an aft booked for our upcoming transatlantic. DW tends towards motion sickness while flying, has used the patch for cruises but usually removes them a couple of days in and has never had a problem, even in somewhat rough seas.

 

But there's rough Caribbean seas and rough ocean seas. I've searched some on the topic of how bad it might get in an aft cabin, but not really found much suggesting we shouldn't do it. It's a D1 on Vision class of RCI, and I understand the balconies are oversize, which we enjoy.

 

Anyone have any problems?