which air ticket to buy ?

• I have a visiting visa that reads,
  
  "The holder may travel to NZ and on application may be granted a permit for/to 6 months.
  Conditions : You must leave New Zealand before expiry of your permit or face removal. The holder is entitled to stay a maximum of 18 months within currency of visa funds waived. Outward passage waived. The holder shall not undertake employment in NZ. The holder shall not study for more than 3 months in NZ."
  
  One way or return ticket ?

  11 Sep 2008, 01:39 jack