These adults-only Carnival cruises are exclusive. What to know.

Carnival Cruise Line welcomes guests of all ages on board, but there’s a way to book adults-only sailings. You’ll need an invitation, though.

The cruise recently added four new Sailings Exclusively for Adults (SEA) aboard its Carnival Firenze vessel. The cruises will sail from Long Beach, California, between Oct. 12 and Nov. 20, with a mix of Mexican Riviera ports, the cruise line told USA TODAY.

Carnival will operate a total of 22 SEA cruises in 2026, including on its Carnival Conquest, Carnival Dream and Carnival Glory ships with departures currently available from Miami and Port Canaveral in Florida and Singapore, along with Long Beach.

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“SEA Cruises are designed to offer a more relaxed, adults‑only atmosphere with elevated dining, entertainment, and onboard experiences,” Carnival said in an email. “Carnival Firenze will also expand SEA Cruise options on the West Coast.”