Originally Posted by
Lucky_man
Getting back on topic, I was of the understanding (perhaps mistaken) that there was a convention/rule that inflight announcements be in at least the language of the originating and destination ports for the segment or flight.
I have found that this as a minimum on every flight I have been on with every airline.
So the Mandarin only really needs to occur on flights in and out of officially speaking Mandarin speaking ports (China mainland/Taiwan).
I wouldn't expect it HKG to almost anywhere else.
On CX684 from Mumbai to HKG a few days ago, there were only a handful of passengers from Hong Kong and they made almost no attempt to have any announcements in Cantonese. This, despite the fact that the ISM is from Hong Kong and her English is incomprehensible to begin with.