First a question: do any of you get motion sickness? I get car sick when in backseat and my husband can't go on spinning carnival rides but we both do fine on cruises. I take motion sickness pills daily just in case we get a rocky ride one day. Both ships have stabalizers but don't know if newer is better. I do know if concerned, reserve a cabin on a lower floor and near the center of the ship. I have been on 2 older ships and have to say I prefer the newer ones. They are just in better condition and have more to offer,in my opinion. Go for the 7 day cruise (besides, the doctors on board can give you something for motion sickness if the pills don't help).