Carnival Cruise Line has announced a new promotion for travel agents with special rates on third and fourth guests in the same stateroom. It also waives non-commissionable fees for those guests.

The promotion runs through May 31, 2018 and is available on select cruises through fall 2018.

“As we grow #thelist we’re looking to activate initiatives that benefit both consumers and our travel partners,” said Adolfo Perez, Carnival’s senior vice president of sales and trade marketing. “This is a fantastic opportunity for agents to get their clients great rates on Carnival’s fall cruises and earn higher commission, making it a win-win for everyone.”

The offer is the latest addition to #thelist of Carnival’s travel agent initiatives, which includes Be the Hero, Agentpalooza, Carnival Conversations, AMP Up Commission Program, Dedicated Group Desk, and commissions on Future Cruise Credits. Agents can book the special offer through GoCCL.com, GDS and Carnival’s contact center.