Without a doubt the wine industry is the driving force behind Marlborough's economy and this cache is the thirty-eighth in a series started by Kiwimykl (and added to by others) to highlight the industry.
Wine Marlborough list 168 wineries on their website and at the time of listing this is the latest in the series.
There is no signage at this winery, but the futuristic building at the end of the driveway opposite GZ is their modern winery. The reason there is no signage is because there is no cellar door at this winery, and they do not want uninvited visors, so you will only be welcomed if you are on winery business.
The cache is a small Resene test pot placed as per the hint and has room for small swag. When placed, as well as the RitR logsheet, it also containd a TB (which if not in the cache inventory, can be grabbed off the CO) and three pathtags from another local cacher.
B.Y.O.P.