Valid on ALL Irish Sea cruise ferry sailings up to December 15th 2017. Valid on Dublin Swift sailings up to 15 December 2017 (excluding 11:50 and 14:30 sailings in July and August). Must be booked online and 48 hours in advance of travel and by midnight Tuesday 28 March 2017. New bookings only. Subject to availability. Excludes freight, bicycles and foot passengers including SailRail. Not applicable for landbridge, inclusive holiday or any other third party arrangements. Not available in conjunction with any other offer or promotion including Tesco travel tokens. Standard charges for non-web bookings apply. Standard terms and conditions of booking and travel apply. Irish Ferries reserve the right to withdraw this offer at any time.