SL member here.
Was supposed to depart on CX 822 @ 1800... HKG-LAX on Tues, but decided not to take the risk.
Rang CX up when I got their SMS that flight rebookings were now FOC.. after about a 20-min hold, managed to snag one of the last seats out today.
At the rate Ragusa is spinning, looks like it'll hit HKG in the early hours of Wed... so I'd assume there'll be a mad rush to clear the decks and get flights in/out by Tues night latest, before HKIA begins buttoning down.
Super Typhoon Ragasa (Nando) LIVE Tracker, Updates & Forecast | Zoom Earth