Free drinks packages are available on all bookings made up to 28 February 2023.
Riviera is currently offering 82 eligible departures across 11 seven- to 14-night itineraries, taking in France, Germany, Portugal, Austria, Switzerland and Hungary.
Packages includes a selection of wines, draught beers and soft drinks at both lunch and dinner while onboard the ship.
Tea and coffee remains fee in cabins, suites and public areas.
Katja Hildebrandt, Riviera’s head of product river and ocean cruise, said: “There’s no more relaxing way to explore Europe than on a luxury river cruise. Travelling in summer months offers long days to discover some of Europe’s most beautiful towns and cities, enjoying evenings in port or sailing out on deck.
"River cruises already offer such great value for money – with regional flights, transfers, guided tours and visits along with all meals all included in the price – and now with free drinks, there’s never been a better time to book.”