I finally made it to HK! For flying out of JFK, NYU Langone worked best for me for getting the pretest, returning the results the same night I took the test. I had some issues with ArcPoint's report presenting some potential issues that could have led to arguments at the airport, so was glad I had NYU Langone as a backup. Feel free to let me know if you have any other questions about the process of traveling into HK now, from the US, another "high risk country," or anywhere else - or about quarantine.