I’m not certain what you mean when you say “ is an automatic preferable if only one person knows how to drive an automatic…”
Are you saying the other person can’t drive OR did you mean to say stick shift….as in the car has a clutch and you need to manually shift gears….
FYI You will pay more for an automatic.
AND YES get ALL the insurance you can. Ireland backroads are small and often lined with hedges, trees, rock walls and beware of flocks of sheep!! Also bicyclists. Understand that you’ll be driving on the left side of the road ( although on the teeny back roads it’s easier to stay in the center…just don’t forget to move LEFT when you see an on coming vehicle ) You need to Realize the steering wheel and pedals will be on what we yanks call the passenger side of the vehicle.
This YouTube video shows how small the backroads can be….
Also be prepared for an occasional roundabout which, if you’ve never experienced before, can be daunting for first timers.
If it makes you feel any better in my 20’s drove the entire island solo…..and in 2018 at 67 did the same thing….both times with a clutch… not a problem because I learned how to drive with a stick shift. BTW I’m a woman.
LASTLY, don’t rely on the GPS…GET A MAP and get the smallest car you feel comfortable with.
Beautiful country, wonderful people.
Can’t not recall who I got the car from at the airport.
Probably Hertz. Dublin airport is modern and rental desk was inside the terminal. However, with Covid you’ll need to confirm where rental car desks are located and if their will be people at them.