When i went to New Zealand (still NZ citizen living in Aus) to get my Visa i needed to show the Japanese embassy a return ticket to prove im coming back etc. Now i have got my Visa do i need to keep this return ticket? Could i just get a refund and enter Japan with no drama or will the man at the airport require me to show my return ticket etc along with my Visa?
I want to get a refund because the ticket was like $1200 one way from Japan to Australia and its just dead money until i can use it which wont be for 12 month atleast.
Do they check these things when entering? Or is it safe to just get a refund?
Also wondering can i do my tax return now before i leave? Im gonna ring up and find out about this tonight or tomorrow but just wondering if you guys know?
Thanks!

- Luke