I would agree with the last post. HA probably attracts more seniors with mobility issues than any other cruise line. On one of our HA cruises I used to joke that if I had the cane and walker concession I would be wealthy. But seriously, if you husband can use one of the electric scooters, this would be worthwhile on a ship. Otherwise, you will be fine with a wheelchair, keeping in mind that the ships are large and its a lot of pushing from one-end to the other (nearly 1000 feet). You also need to notify the cruise line of his disability since you would want to book one of the handicapped accessible cabins (they have better access to the bathroom).