7 Day Itinerary?

Just curious about Days 4 & 5 -- you plan to sleep in Dublin but you'll still have your rental car, is that right? I personally have not driven in Dublin, but riding in taxis and buses made me aware of the labyrinth of one-way streets and construction-related street closings. You might be better staying the night of Day 4 outside the city, then turning in your car at the end of Day 5?

We have driven in Dublin. Advice is definitely do not do this. Maybe you can rearrange your plans and stay in Cashel, go to Glendalough, return car to airport, get transport into the city and just use public transport.

I think you're short changing Dingle, my favorite place in Ireland. You'll have no time for the Dingle peninsula if you try to go to Killarney NP. I would add a night in Dingle. But then you'd have to drop a night in Dublin. I'm not a big fan of Dublin, so that wouldn't bother me. If there are things you want to see there (I did love Trinity Library), then you'd have to give up Glendalough & the Wicklow Mountains or try to squeeze it in the morning of Day 7 since you have a late afternoon flight. Tough call.

I do agree that you don't want a car in Dublin. We drove around the city for a couple of hours trying to find our hotel. It was hell. Even when we found it, it took half an hour to get there because of the one way streets.