I don't know if you have some kind of a forum about the grounding of Air Niu, but we only can comment for our guests on Fafa Island Resort who have been using both airlines, and the Fly Niu was the preferred airlines with most guests.
Anyhow due to this new situation we already are getting cancellations from Europe.
We are sorry that Fly Niu had to close down. It's a drawback for tourism in Tonga again, which was starting doing well with both airlines.
Fafa Island Resort
P.O. Box 1444
Kingdom of Tonga