My understanding is that when they opened WDW, they had to regularly fumigate the entire area with thick clouds of pesticides and they still use a decent amount of chemical pesticides to this day. I would be curious to hear how they manage
Castaway Cay but I’m guessing it is not all natural either.
It sounds like Disney made a lot of commitments about minimizing environmental impact so I’m not extremely optimistic about how they will keep insects to a minimum, especially when they can easily migrate south from the other parts of the island. If the ship is easy enough to access, I would be willing to return to the ship for meals if it means keeping protecting the local ecosystem, but I am also curious/concerned what situation is with biting insects, need to remember to pack my own bug spray, I guess.