My DW now uses a scooter, last cruise was on princess. We had an accessible cabin which we could not only park the scooter inside but also turn it around. We was able to get it up and down the ramps on docked ports. One of the ports was a tendered port and she didn't want to get off, but the cruiseline used locals to tender to the island, when a scooter came down the crew from the boats helped the person aboard and then carried the scooter aboard....first time I have ever seen that. Most cruiselines now have you fill out a form for the scooter, I guess so they know how many will be on each sailings. The hallways are to narrow and is worse with scooters sitting there blocking them.