Agents have the chance to earn £50 Love2Shop vouchers when making an A-Rosa river cruise booking with Just Go! Holidays.
The first 20 agents to book between April 1-30 and 30 will automatically receive a voucher.
Just Go! Holidays is offering three different nine-day no-fly river cruise holidays on the Rhine in September with A-Rosa.
Each includes return coach travel from a range of pick-up points across England.
Nine-day package prices start at £1,799 per person, including seven nights cruising on the Rhine or Dutch waterways from Cologne.
Just Go! Holidays trade sales manager Claire Dutton said: “Having experienced A-Rosa myself on the Rhine I know what a great product this is, particularly because it is premium all-inclusive.
“Customers love that all meals and drinks are included from morning to night, making it easier to budget whilst they are away.
“These itineraries visit some amazing places, from UNESCO World Heritage Sites and wine regions to big cities such as Amsterdam and Bonn.
“We have secured great September dates when the temperatures will be wonderful, and I hope our new incentive will encourage agents to promote these fantastic river cruises and put them front of mind with their customers.”