As well as two marquees, paper lanterns and fairy lights decorated the fittings, to light the evening's festivities.
Up to 200 people were thought to be invited to the celebration, held in the community where Ladyhawke, real name Pip Brown, was born and raised.
Given the couple's affiliation with the arts, it was expected that a number of musicians and actors would be there.
That included Academy Award nominee Taika Waititi, who directed and starred in Kiwi vampire flick What We Do In The Shadows.
He was spotted by the Times-Age at Farmers in Masterton, buying a belt.
When asked by a reporter for a photo, he readily agreed but asked if it could be quick. "I'm running late for a wedding".
Three bus loads of guests were spotted heading to the remote venue about 3pm.
A source, who did not want to be named, told the Herald it would be a big day for the couple.
"There'll be over 200 people there. It's going to be quite big and lots of celebs [around]."
Over the years, the couple - particularly Brown - have been quite private about their relationship, but have a home together in Los Angeles.
The singer is known for hits including My Delirium and Paris is Burning.
She is known for her love of men's clothing and regularly performs in men's jackets and shirts.
The source said no one was expecting her to be wearing a dress today.
"She'll be wearing the trousers, apparently. She never wears dresses."
Actress Sami grew up in Auckland and has had roles in Sione's Wedding, Outrageous Fortune and Top of the Lake.
She is also an accomplished comedian and sings in a band alongside her sisters Anji and Priya as The Sami Sisters.
On Thursday Priya posted a photo of a polaroid picture on her social networking websites showing the bride-to-be - as well as their mother and another family friend - getting a pedicure at a nail spa. Priya wrote: "The event 2015." Additional reporting, NZ Herald
