The river cruise and escorted touring specialist is guaranteeing rewards on every booking made between 20 December and 9 February.
Gifts up for grabs include an eight-day “all expenses paid” river cruise for two with spending money, a worldwide tour for two, European tour for two and travel vouchers up to the value of £500.
Riviera, which will offer more than 390 cruises and 1,500 tours in 2024, recently launched its 2025 programme - adding a further 254 cruises and 627 tours.
To mark Riviera’s 40th anniversary, every 2024 river cruise departure will host a special celebration onboard.
The company is also set to grow its trade team to 18, with plans to recruit three new account managers.
Phil Hullah, Riviera chief executive, said: “This one-time giveaway marks the beginning of a year of celebration for Riviera.
“We’re so proud of our 40-year heritage and can’t wait to share this milestone with our guests, both through this fantastic offer and the added extras we’ll introduce onboard.”