Earthquakes - so far so good, but I grew up in LA and lived through multiple large-ish quakes (Northridge). One big difference is that many small rural towns only have one road in or out, so a quake could block the road, leaving you stranded, possibly without power. This is the case along the west coast of the South Island.
Food - groceries are pricey! It was surprisingly expensive given the lower wages here. CA seems to be catching up though!
Mosquitoes - comparable to LA, less than Sonoma County. Smaller too. But here on the South Island we also have sandflies. They vary by region. West Coast has them bad in some remote spots.
All of those countries have societal norms that are vastly different with respect to illness.
Japanese people voluntarily, proactively wear masks when sick in public, for example.
Notwithstanding some of the later research about the efficacy of masks, there was a lot less those governments HAD to CHANGE to minimize disruption, because their populations were already not generally selfish about their needs versus those around them.
No, they're not, but when you have a population that already is (let's be real) significantly more selfless and conscious of the wider impact of infectious disease (or even the perception thereof), you're going to be able to enact other public policies that are consistent with that goal with a lot less disruption or opposition.
I felt Thailand, where I live, handled it fine. I didn't feel like we got pressured here into getting the COVID vaccination and life could go on quite as normal for me as an unvaccinated person in our village (in the city it might have been different).
Though my girlfriend did get the COVID vaccination eventually, due to her being afraid of not being able to visit venues, restaurants and such. She regrets now that she got the COVID vaccination. We know of many people in our neighborhood who've gotten health issues related to the COVID vaccination (e.g. blood clotting, strokes, Guillain-Barré syndrome, etcetera).
I felt that NZ handled it great! I lived through a year of American lock down and then a year of Kiwi lockdown (we emigrated from the US while on lockdown - it was nuts). IMO Ardern handled it beautifully, at least compared to the misinformation train wreck happening in the states, but that is of course only my opinion.