What they have done is a clean up for window dressing. I am sure very little has been done technically such as new piping, air conditioning.
They will do some strategic events during the winter months using the open decks ,upper deck and boat deck restaurants. They will use the penthouse suites as show cabins and in December 2018 they will advertise her as a condo hotel and start selling condos from which the down payments will fund the project in conjunction with sucker investors, and banks, the same type as they got for the world project.
At the end of the day the project will fail because she is in lousy location, unless they close down Dubai dry docks and develop that area. Another problem is unless you have 1500 people on the ship she will be like a ghost ship and will lack any atmosphere. The type of room upgrade to match Dubai hotel standards will mean she would be a 300 room condo and even then it will not be enough to compete . However Dubai are past masters at putting a positive spin on a sales pitch, eventually they will realise she is a ship with a corroding hull and a disintegrating aluminium superstructure and in time she will fail.