Thanks for the information everyone. ]
I just got my itinerary. I arrive in Dublin early morning on May 27. I have pretty much the whole day free and plan to get out and explore. We are going to hit Cork, Killarney, Galway, Sligo and Belfast with some stops in between.
I am getting my ND filter ordered, but I will also pack my polarized.
I look forward to visiting your beautiful country.