Doable? Yeah.... probably. Advisable?.... not really. If it were just you and your wife I'd say sure, go for it, but with [2] teenage girls along it would be brutal.
Most scooters are at or around 20-21" wide. Most cruise cabin doors are 23-24" wide, so theoretically it would fit. However, I think it would be a HUGE inconvenience with the amount of space it would take up. Maybe an accessible cabin would offer more in the way of manuvering it out of the way, but even then..........
Bottom line...................I'd say no.