We recently got back from our 16 day trip to Ireland and we drove a lot. Hubby has experience driving on the opposite side, but watching You Tube videos can help you to "see" what it is like. We did that before our first experience.
I know you are not asking for more feedback, but I'll tell you anyway. As I heard before our trip, but now I know, driving times are not accurate on most GPS or maps etc. I didn't really understand why before our trip. But the roads are actually much slower than the speed limits. They are very, very narrow and have curves that slow you down. We planned to drive 3 hours between some stops and those 3 hours turned into 5. So, just plan for that. The driving is also intense- you have to stay very awake and concentrate so it can be tiring, but well worth it!! It's great to get on those small roads and explore rural Ireland. In the Rick Steves guidebooks he has road signs you need to know. But, it's no problem. Have fun!