When someone asks that question, the answer is usually 'yes.'
We have a brief trip to Ireland Aug 29 - Sept 3 (our dates actually in Ireland, not travelling. Believe it or not, I did try to pare this thing down. Dingle looks stunning and we are very excited to visit that neck of the woods. It may be too much time, for us and our particular wants, in Dublin, but we can relax, drink, do things at a leisurely pace.
Arrive in DUB (tried unsuccessful to fly into or out of Shannon - booked on miles, so less flexibility) at 5:15 on August 29. Depart DUB at 615pm on Sept 3.
Depart BOS on Wednesday, August 28 at 6:15pm
Arrive in DUB on Thursday, August 29 at 5:15am
One way car rental
Pick up at DUB on Thursday, August 29 at 6:15am
Return to KIR on Sunday, September 1 at Noon
Automatic transmission, GPS
Day 1 - August 29
Drive 4-5 hours to Rock of Cashel
Day 2 - August 30
Drive 3-4 hours to Dingle
Spend two nights at Pax Guest House
Day 3 - August 31
Day 4 - September 1
Fly from Kerry (KIR, about an hour away) to Dublin on Aer Lingus - departing at 12:30pm
Spend two nights in Sheraton Dublin (free, points)
Day 5 - September 2
Day 6 - September 3
Depart DUB on Tuesday, September 3 at 4:15pm
Arrive BOS same day at 6:10pm