I agree with Ozzymick.
When I learned to fly, a guy stopping in one of the flying school's villas failed his medical. Not quite as far as NZ, but believe me, sitting in a villa in Florida with 6 other blokes (all flying) listening to their joyous tales must have been a complete p1sser for him.
If you want to do your PPL get your appointment booked with your AME. When you're there, ask the AME if there is anything that he/she would think might stop you obtaining a Class I medical - yes I know that the CAA must examine you but there's no harm in asking the question.