My older DD and S in L moved to Wellington just over 6 years ago, and have never looked back. They have a lovely house, nice jobs, and my little grandson is 4 and a half. We are incredibly lucky to have been able to downsize our home and put the equity into savings to enable us to visit them twice a year. Obviously we miss them all the time - we Skype regularly which helps a lot but miss the cuddles and hugs - but I wouldn't want them to come back, they could never have such a great quality of life here. Our grandson is developing quite a strong Kiwi accent from his pre-school! And when we first visited my husband had great fun trying to make himself understood in the supermarket looking for pegs - complete incomprehension on the part of the assistant until my husband said 'You know, those things you hang clothes up with' - 'Ow, you mean PIGS'!
We have noticed quite a few changes since we first went - more free range and organic food in the supermarkets, for example - but we don't expect to move there. One of the things we love most is - great cafes everywhere! And yes, it can certainly be cold in Wellington and the heating can be very variable - we stay in an apartment when we visit and in August we are armed with warm clothes (fleeces and gloves) and especially warm pyjamas, bedsocks and HWBs, and borrow a fan heater from our DD!