My wife, daughter, and I will be in Ireland in June for four days, part of a longer England/Ireland trip. We'll be flying into Dublin, and I'm thinking we'll use Dublin as a home base, maybe explore the city for two days and then do day trips for the two other days. This seems a better idea to me than renting a car and trying to cram as much of the country in as we can in four days. So I'm looking for suggestions for day trips outside Dublin, and how to do those trips (rent a car? sign up for a tour? Just take a bus or train and explore on our own?). Also open to other ideas for getting the most out of those four days.
Thanks.