I am scheduled on CX649 tonight at 21:15...delayed from 16Sept to 17Sept. I am checked in and have boarding pass, and the flight is not cancelled yet. I am the only person with a seat assignment in J in online check in! Should I arrive very early to HKG, like noon, in case my flight gets cancelled and they might be able to get me on a connecting flight via SIN, BKK, KUL, etc? Will they allow me through security so long before flight? Will it be a madhouse? I am worried they won't cancel flight until later tonight after my connecting options have all flown away.