All cruise vessels undergo rigorous safety and maintenance schedules to make sure they are always at the top of their performance. Because of this, yearly schedules are set and cover not just breakages but set routine replacements and preventative maintenance.
The annual fees include costs to undergo such future things as vessel repainting and dry docking, when it comes to internal fit-outs only the common areas are considered and included for future ‘updating’. Residence updates will be by the cost of the residence owner.
Like an aeroplane, all maintenance issues are thought of in advance on a cruise ship. Many vessel repairs can be done successfully while in port or underway.