"I haven't been so involved in the planning process," Hartley told the Herald. "I've been pretty busy so I have a good excuse.
"We have a few friends coming from Europe – I think a lot of people were looking for an excuse to have a holiday in New Zealand so it will be fun.
"We are not particularly traditional so it will be a fun time with some friends and family."
There won't be a lot of time to relax or honeymoon however as Hartley is needed back in Europe to prepare for the season ahead before the end of January.
"We have a few days after to enjoy with friends and some time to get on my mountain bike a bit," he said.
Hartley will help work on the development of the Honda power train that Toro Rosso will employ in 2018. He will get his first chance to drive a Honda-powered car in winter testing at the end of February before the first round of the championship in Melbourne in March.