What should I pay attention to when driving in New Zealand ?

You don't need to pay special attention to anything, except that the driver's seat is on the right, so remember to drive on the left. Everything else is the same. You may often mistake the turn signal, but it's easy to correct with just two clicks. Follow the traffic lights and give way when turning, especially at T intersections where only cars with 3 or more people are allowed. It's okay to be a little slow. Many people may advise you to drive faster or else the locals will be upset, but it's better to prioritize safety over saving face. The speed signs in New Zealand are very clear, so it's best to follow them, especially on mountain roads. I've learned my lesson the hard way, so don't listen to those who encourage you to speed.