NZ is the second-most desired country for potential immigrants and letting everyone in would see the population almost treble, a survey suggests.

The numbers of overseas visitors coming to New Zealand in July was up four per cent on last year bringing visitor arrivals to record levels.

A regional processing centre in the Pacific for asylum seekers would not be in NZ or be propped up with NZ funds, John Key says.

383 couples walked up the aisle to trade rings in a flurry of local passion that, at one point, saw the resident vicar hosting a wedding daily.