An additional 5% commission will be given on all Royal’s 2019, 2020 and 2021 cruises booked between 1 August until 30 September.
The extra incentive is applicable on all commissionable elements of the booking including flights, hotels and private transfers.
Martin MacKinnon, who joined Royal as its new UK and Ireland sales director in January, said the line wanted to “celebrate our strong relationships” with trade partners.