KA exclusively serves DPS with A333. The OP will not have Dragon Island (500-515). True remote gates via bus boarding are of course possible with KA, even with CX metal in a true blue moon, but unlikely.

To the OP:
As other posters imply, your gate selection can really be random, but within 1-80 (aka 500+ remote gates technically possible, but rather unlikely). KA/CX assigned gates from HKIA I think right now are 1-4 (all), 40-49 (odd), 60-71 (all), and 21-33 (odd).

However, HKIA and all the airlines change up the regular gates from time to time. Unsure when the next change is. And anyway, CX/KA are such a large portion of HKG flights they will inevitably have half the gates anyway. Bottom line is that flight doesn't necessarily have a regular gate.
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