Hi there,
I rarely rent Hertz but it seems it is the best option for my upcoming road trip in New Zealand.
When I searched for the rates for one-way rental from WRE to WLG, it seems the rate is a lot cheaper (approx. NZ$200 less ) for a 4 day rental than 3 days.
I found a few old threads saying that Hertz re-calculated the rates when returning early.
However, according to the T&T on hertz.ca and hertz.co.nz, it seems the rate would not be re-calculated, but I would not get any refund either.
Was this a recent change?
Also, do I need to buy separate liability insurance in NZ if I decline LDW using amex?
Thanks a lot!

The Hirer acknowledges that they shall be liable at the end of the Hire Period to pay Hertz any applicable additional charges, which may include: (a) Charges in the case of early return of the Vehicle: where the Hirer returns the Vehicle prior to the Hire End time (either by his/her own volition or in accordance with clause 5 above), the Hirer will remain liable to pay the hire charges for each day the Hirer has agreed to hire the Vehicle as set out in the Term Sheet
https://images.hertz.com/pdfs/RT_FULL_NZ_EN.pdf