in my case, i bought some AUD sa BDO.. need mo lang magpareserve..
kase pagdating mo dito sa australia may fee kapag papapalitan mo yung money mo sa forex. tapos kapag sa airport naman mababa rates..
pwede rin na ideposit mo na lang money mo sa normal mong ATM (phil account) then withdraw money as you wish. pero syempre may bank charges din..
most effective way is to buy AUD na lang sa bank.. best way to buy ngayon kase 43, sometimes 42 na lang ang 1 AUD to PHP..
when i went here in australia last year 1 AUD = 46 pa..