Some suggested itineraries for epic trips:
https://www.newzealand.com/nz/trips-and-driving-itineraries/8-14-days/
https://www.theblondeabroad.com/ultimate-itinerary-for-a-new-zealand-road-trip/
Lake Tekapo
Canterbury 7999, New Zealand
Must do: star gazing from the hot springs! Unbelievable