Norwegian Joy underwent a major passenger-area refurbishment at Damen Shiprepair Rotterdam's Botlek yard. A new Thermal Suite was created in Mandara Spa & Salon, while Vibe Beach Club was expanded into the former laser-tag area with additional outdoor space and private cabanas. Twenty-four new balcony staterooms were created from part of the Observation Lounge. The ship's two Haven Premier Owner's Suites were redesigned as three-bedroom accommodations with three-and-a-half bathrooms, renovated living rooms and master bedrooms, new balcony furnishings and separate dining rooms overlooking The Haven Horizon Lounge.

Damen modified the superstructure to replace Observation Lounge windows with balconies. Both Azipods were removed for replacement of drive and non-drive bearings and slew bearings before reinstallation. The ship received a complete new paint system, including biocide-free silicone coating on its vertical hull sides to reduce fouling, friction, fuel consumption and emissions. Norwegian Joy resumed passenger service from Southampton on February 13, 2024.

Norwegian Joy completed an extensive approximately $50 million refit in Singapore to reposition the ship from the Chinese market to North American service. The project redesigned accommodations and public spaces, added The Local Bar & Grill, American Diner, Starbucks and expanded entertainment offerings, converted the Galaxy Pavilion and other spaces for the North American market, and included extensive technical maintenance before the ship repositioned to Alaska.