New Zealand Recommendations: 2-week NZ itinerary advice (Auckland → Queenstown, Dec 17–30)

Hi all,

We’re 2 people traveling to New Zealand this December and would love your advice.

• Dates: Dec 17 (arrive Auckland) → Dec 30 (Queenstown, afternoon flight out)
• Goal: Cover both North & South Island highlights
• Constraint: I have a slipped disc, so we’d like to minimize long road trips / self-driving. Prefer flights or trains between cities, then short local tours.
• Xmas: We’d love to be in a lively city on Dec 25 to experience celebrations.

Based on the above:

1. What’s the best route/itinerary/must-see spots for us?
2. Which city is best for Christmas vibes: Wellington, Christchurch or elsewhere?
3. Any recommendations for scenic train journeys or short/easy tours that don’t involve much sitting in cars?

We’re hoping to build a a balanced itinerary: mix of nature, local culture, and light adventure.

Thanks a ton in advance for your help.