hi @piglet, dun sa invitation letter namin ni-specify na 1 year stay..
and also sa application form online, meron dun "Give details of any significant dates on which the applicant needs to be in Australia:" nilagay namin yung each dates ng bdays namin which like this:
28 September 2015 Birthday celebration of my Grandson
22 January 2016 Birthday celebration of my Son
12 June 2016 My Birthday in Australia
which is konti na lang e one year span na..