The train service has said a number of services at the weekend are already sold out.
Irish Rail is reminding all customers that advance booking for Intercity rail travel remains mandatory at present, ahead of this weekend's All-Ireland Hurling Championship Semi-Finals in Croke Park.
In a statement, Irish Rail said it was issuing the reminder in particular for Cork, Kilkenny, Limerick and Waterford supporters intending to travel to Dublin for the matches.
Limerick will play Waterford on Saturday at 5pm, while Kilkenny and Cork will face-off on Sunday at 3.30pm.
Irish Rail has said that mandatory pre-booking is in place in order to manage the 75% of on-board capacity available for use under current public health measures.
"Already, a number of services are sold out over the coming weekend, with more expected to sell out in advance," the train service said.
"Customers must have a booking to travel, as tickets will not be available for sale at stations for Intercity services."
This includes holders of existing tickets such as season tickets and DSP free travel, who can reserve travel at no charge in advance under current measures.
Irish Rail is also reminding customers that:
- You must travel on the specific train you have booked as tickets cannot be used on other services
- Face coverings are mandatory onboard all train services and in stations
- Alcohol is prohibited on all services and catering services remain suspended
- Customers with bicycles must also pre-book bicycle spaces onboard Intercity services in advance
Ticket bookings and reservations are available at
Irish Rail's website.
