Holidaymakers will receive a free £20 food voucher this summer when they book a Dover to Calais crossing with P&O Ferries.
Customers will be given a voucher to spend in their choice of on board restaurants when they book a return car trip of more than five days. Vouchers can be used in the Brasserie, Food Court or Club Lounge.
The offer applies to bookings made by June 23 for travel by September 30.
Lead-in fares start from £35 one-way for a car and up to nine passengers.