Most cruise ships arrive in the port of Cobh next to the Train Station, which you can walk to from the ship (2 minute walk).  You can get a commuter train from there to Cork City (it takes approx. 25 minutes) often with extra capacity and departures on the days that there are cruise liners in port). When you get off the train in Cork, walk out of the station, (exit door on your right as you come through the barriers), cross the road at the pedestrian crossing and we have a bus stop directly across the road.  (Just at the Railway View Pub).