Emerald Waterways is targeting 2022 departures with a range of Black Friday booking incentives.
River cruises in Europe and Asia are featured in the promotion which runs until November 30.
Discounts of up to £1,000 per couple apply on sailings in Europe and £1,700 in Asia.
European departures include a free premium drinks package, €150 on board spending money per cabin and an extra 10% discount if paid in full 12 months in advance.
Prices for an eight-day Danube cruise from Budapest to Munich start at £1.995 per person based on an October 15, 2022 departure on Emerald Dawn.
Asia cruises lead-in at £3,695pp based on a May 4, 2022 sailing for 15 days on the Mekong in Cambodia and Vietnam by Emerald Harmony.