On the basic principle of we were going to book anyway, so it's a welcome little bonus .....l guess you're right tfung.
That said, it's almost as though CX went out of their way to make the promotion about as underwhelming as possible : the combination of a low-value* 'benefit' and a very limited number of beneficiaries !
With a total commitment of a little over HK$30K, they didn't exactly go wild with this one .......
(*relative to a typical ticket spend)