We live in Key Largo for six months of the year and are here now.
If you have never been here before you won't notice too much of the damage and should enjoy it.
If you come here often, I would advise waiting until next year. Many of the places that you know and enjoy might not be open and some will never recover or are still recovering.
Most of the tropical trees and mangroves that were stripped bare of their foliage are once again green but there are still bare ones here and there that will die if they haven't already
With that said, there is ongoing repairs all up and down the keys and contractors are in a shortage.
jack L