Carnival Spirit completed a scheduled maintenance and refurbishment period that introduced a Heroes Tribute Bar & Lounge, a Carnival Adventures Shop, a Dreams Studio and a dedicated Chef's Table venue. The Cloud 9 Spa, fitness center and retail shops were upgraded, a new miniature-golf course was installed, and the casino received a revised layout and additional gaming machines. The nightclub was refreshed and youth-program spaces were upgraded. Stateroom improvements included new bedside cabinets and lamps with electrical and USB charging connections, together with additional sofa-bed lighting and USB connections. The refurbished ship welcomed passengers in Barcelona before repositioning toward its Alaska season.

Carnival Spirit underwent a 28-day refurbishment and maintenance project at Drydocks World Dubai in the United Arab Emirates during its extended suspension of passenger operations caused by the COVID-19 pandemic. The ship received Carnival Cruise Line's new red, white and blue hull livery, replacing its previous predominantly white exterior appearance. Technical maintenance and general repairs were performed alongside interior cosmetic improvements, including replacement carpeting, tiling and other finish upgrades. The Ol' Fashioned BBQ dining venue was removed as part of the onboard changes. Dry Dock Logistics supported the project with the coordination of 141 TEUs of equipment and materials. Following the shipyard visit, Carnival Spirit returned to its lay-up berth at Dubai Harbour Cruise Terminal while awaiting the resumption of passenger operations.