What are some tips for helping my family adjust to life in a new country?

I recently moved to New Zealand and am loving it! My wife and 2 daughters are going to be joining me here in about a month's time. None of them have ever been out of the U.S. My wife's open-minded enough and the kids, well, I assume they'll adjust fine, but I was wondering if anyone here would have some tips for easing the transition for them? Thanks!