Thanks everyone for your response so far.
Apologies for the vague question. Although I was asking generally, I appreciate that some details could have helped in providing better responses.
We are aiming for Seoul ICN during early April, preferably flying out of SYD 5th, 6th or 7th.
By the sounds, generally its going to be tough, and platinum may or may not afford me any extra benefits/opportunity. It will really be a game of chance I suppose.