Very satisfied, the whole process was smooth.

The process was quite convenient. You just need to drop the key in the small house at the exit when returning the car. The road assistance is just a card with a contact number, costing 10 NZD/day, which I found useless and a waste of money. Because traveling to Milford Sound requires you to rent snow chains, you have no choice but to rent them for 12 NZD/day. If the store doesn't explicitly say you need to rent them, don't bother.

The drop-off location is very hard to find, it's inside the airport.

Quick car pickup service.

Great! A white new Highlander with only 7378 kilometers at pickup. Despite my limited English, the staff explained everything patiently. Returning the car was even simpler; a parking lot staff took the keys and said 'bye-bye,' and it was done. Perfect.