Carnival Glory completed a scheduled shipyard maintenance period at Chantier Naval de Marseille and received Carnival's red, white and blue hull livery.

Carnival Glory underwent a scheduled refurbishment in Freeport, The Bahamas, from February 25 through March 10, 2017. A major passenger-facing addition was WaterWorks, which introduced the Green Thunder and Twister waterslides along with children's racing slides, splash features and a PowerDrencher tipping bucket. The project also included scheduled maintenance and general refurbishment before the ship returned to service.

Two-week dry dock in Freeport, The Bahamas; major Fun Ship 2.0 refurbishment added Guy's Burger Joint, BlueIguana Cantina, Alchemy Bar, RedFrog Rum Bar, BlueIguana Tequila Bar, EA Sports Bar, Cherry On Top, and updated entertainment.

Carnival Glory underwent a scheduled ten-day dry dock and maintenance project at Northrop Grumman Newport News Shipbuilding in Newport News, Virginia, beginning January 9, 2006. The approximately $1.2 million contract covered maintenance of the vessel's hull structure, inspections of underwater hull equipment and underwater hull painting. Northrop Grumman's Newport News division served as the prime contractor, assigning approximately 40 shipyard employees to the project. The work focused on maintaining the ship's underwater structure and equipment rather than introducing new passenger amenities or major interior modifications. The project was undertaken while Carnival Glory was operating as a 110,000-gross-ton cruise ship with accommodation for approximately 2,974 passengers.