In June, after our 12 day visit to Scotland, England, Wales, we will travel from Holyhead, Wales to Dun Laoghaire (near Dublin) by ferry. We plan to stay in Dun Laoghaire for 2 nights before taking our flight back to US from Dublin. Regarding the Ferry trip: It appears that only one ferry company goes to Dun Laoghaire (one trip/day). Does anyone know if the Stena Line ferry is reliable and makes the trip as scheduled each day? (leaves Holyhead at 10:30 AM in June). Are there any other ferry companies that run from Holyhead to Dun Laoghaire?
If we arrive by ferry around noon, we will have the rest of that day/evening and all of the next day for sightseeing in Dublin and around Dun Laoghaire. Although we may only get a glimpse of Dublin, we'd like suggestions on the "must see" things to do and see in Dublin, best places to eat, and best Tuesday night pub?? We won't have a car, but, wondered if there are any sites of Ireland's natural beauty that are nearby and easy to reach by train/bus? We noted that the Wicklow Mountains, Wicklow, and Gardens of Powerscourt are nearby.
Thank you for your responses.