2 couples hoping to go on a canal cruise in early Feb/23. One member of the group has struggled with sea sickness in the past. Our two options are the Emerald Princess,15 day, or the Zaandam,14 day. Would there be any advantage to being on the Emerald Princess for increased stability? We’ve sailed neither cruise lines so don't necessarily have loyalty to either. Any advice ,regarding either ship, and motion related issue would be greatly appreciated!