New Zealand in the late autumn brings crisp air, thinner crowds, and lower airfares before the winter ski season kicks in. It is the ideal time to base yourself in Queenstown for bungee jumping, canyon swings, and alpine hikes without fighting peak-season prices.
Big trips like this take some cash flow management so you do not drain your checking account all at once. Spreading out the cost can make those flights and gear rentals much easier to handle.
That 0% window is a deadline, not free money. If you still have a balance left when the 18 months are up, the remaining amount will start accumulating high interest charges fast.