The incentive is eligible on 14 itineraries across Europe and includes sales secured up to 28 February. 

From 22 December, Riviera is also offering a “time to catch up” customer offer with savings of up to 20% on their second trip when guests book two 2022 Riviera holidays. 

Customers can save 20% if their second holiday booking is a river cruise departing between April and June, or 10% on any other holiday. 

The offer runs to 31 March.

Tom Morgan, Riviera’s head of agency sales UK and Ireland, said: “The trade has once again been brilliant for us this year, backing us throughout the last 12 months. We want to say a huge thank you for all their support.

“Our £50 offer is a way of continuing our appreciation. And with so much choice available, we hope the vouchers will be snapped up by our agent partners, as their customers set their sights on a 2022 river cruise or two.”