We are booked on the 18th, and I dont anticipate these flights to operate, I have a feeling United will remove them when the next update comes (hoping so anyway so its easy to refund)
Air Tahiti has cancelled most of our domestic flights between the islands anyway - so the trip is going to have to be postponed.
Good luck on getting a test (and results) within 72 hours of arrival - which really means you have 2 days to get results