The issue with Italy is that they ignored safety measures and pretty much continued as normal.

I'm not sure why you're bringing New Zealand as an example. They cut themselves off the rest of the world and now they have cases again, just as you said. But in entire New Zealand it's been zero or few new cases per day. They don't have new cases even daily. And as the spread is extremely minimal, they need only minimal restrictive actions. Lockdowns aren't meant to last for long, but if the worse the situation is, the longer lockdown might be needed.

You can see the statistics here:
https://www.health.govt.nz/our-work/diseases-and-conditions/covid-19-novel-coronavirus/covid-19-current-situation/covid-19-current-cases

And not sure about that valid point. When you're in a restaurant, you're passing multiple people in a closed area. When you sit down, you most likely don't move as much anymore. Larger groups of people, especially indoors and/or in close proximity, have higher risk for easy spread of the virus. Being outdoors and having space between people helps. It's not magic, even if it might seem like it.

And anyways those are only details. If the specific actions are the problem, you can criticize them, but complaining about all actions makes no sense.