Royal Caribbean International is offering agents an additional 5% commission on all 2019, 2020 and 2021 sailings booked between August 1 and September 30 this year as the line celebrates its 50th year.

The incentive is valid for all booking elements, including flights, hotels and transfers.

Martin MacKinnon, the line’s sales director for the UK and Ireland, said: “As the winners of the Travel Weekly Globe Travel Awards for Best Trade-Friendly Brand, it seems only fitting that we should, in our 50th year, celebrate our strong relationships with our trade partners with an extra-special incentive.

“We feel this is the perfect way to reward agents for the very strong bookings we expect they’ll be making between now and the end of September. We hope our partners recognise this is yet another demonstration of our ongoing commitment to them.”

MacKinnon said he expects “high demand” for Allure of the Seas when it sails in Europe next year after a $165 million refurbishment.