Irish Ferries offer a 30% discount on the standard foot passenger rates (adult or child) on both Ireland - Britain routes and Ireland - France routes, to people in possession of a valid International Rail Travel Card. The Pass has to be valid be valid for travel within the dates you have booked.
Discounts apply only to standard foot passenger fares and not to any special offer or discounted fares that may be available from time to time. Discounts do not apply to cabin accommodation which is available at an extra charge.
In order to claim the reduction please make your booking on-line and pay in full - then e-mail your booking reference number and your rail pass number to bookings@irishferries.com at least 5 days before your outward travel date. The relevant reduction will be applied to your booking and the credit will be refunded to you on the card used to make the booking. No reduction can be applied once travel has commenced.
You may be asked to show your rail pass when you check-in for the sailing.