The deal also features a 50% reduced deposit.
During the four-day sale, new individual bookings made with deposit will receive $50 on-board credit per stateroom on cruises up to five nights, $100 per stateroom for six- to nine-night itineraries and $200 per stateroom for 10-night and longer cruises.
Cruise-tour bookings are eligible, too.
The Wow Sale is open to US and Canadian individual bookings made from June 1 through 4.
Details are here.