re: Has anyone here been to the Dingle peninsula?

This time of year the weather is going to be really touch and go, do expect to get a good bit of rain.

You will encounter your first traffic circle before you even get off of airport grounds.

When driving, realize that they don't change the speed limit if there is a sharp turn up ahead. They expect you to do your own speed risk management. You probably want the absolute smallest car you can stand. I had a Nissan Micra and barely made it through some passages with stone walls on both sides of the car.

Make sure to incorporate the Rock of Cashel during your time in the southwest.

Any particular reason to single out Cork? I didn't spend a ton of time in the city, but the value of Ireland is really stuff that's in the countryside, not in the cities, particularly the larger ones. With Cork, if you look at the "top things to do in Cork," note how almost none of the stuff is in Cork city, but in Cork County. Even the TripAdvisor page consists of Blarney Castle and stuff that isn't in Cork city itself.