Despite a packed itinerary, the royal couple are not giving fans much chance to meet them.
The pair also made headlines after refusing to try the organic lamb cutlets despite New Zealand's culinary reputation.
Their New Zealand tour comes just days after Camilla whisked Charles away on holidayfor his birthday earlier this month.
The Prince of Wales joined his wife at a holistic health retreat after spending two days in New Delhi and Mumbai on a royal engagement.
"The Duchess has been determined to force the Prince to have some downtime on his birthday and insisted he join her at her retreat," a source told Hello!
Located on a 12-hectare organic farm, the retreat offers yoga and ayurvedic, homeopathic and naturopathic treatments.