She was Carnival Cruises Line's first newly built ship, initially operating mainly in the Mexican Riviera and the Caribbean.

[7] The vessel was originally intended to be constructed in Japan, after Carnival's most recent acquired ship the TSS Festivale had received a major refit there.

The Tropicale was launched in 1981, and was the first cruise ship custom-built for the company, introducing Carnival's characteristic winged funnel, designed by Joe Farcus.

The vessel was slated to replace Dolphin IV of Cape Canaveral Cruise Line in 2001, but before Carnival Tropicale could enter service, the vessel was transferred to Carnival Corporations division of Costa Cruises, where she was renamed Costa Tropicale.

[13][14] The interiors were completely renovated, transforming the Carnival themed lounges into the contemporary Italian style seen on other Costa ships.

In June 2009, an outbreak of swine flu occurred about the Ocean Dream during a cruise around Central and South America.