Buses in IrelandYes, they're few and far between in some counties, but many have a reliable service.
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You'll be grand getting around Ireland's cities and towns on public transport (for some you'll probably only need to walk). But once out in the country's more rural areas, you may find the availability of public transport significantly reduces. The key thing is managing expectations.
However travelling by train is generally a comfortable way to see Ireland. For journeys between Dublin and Cork and Dublin and Tralee and points in between the train is generally faster than driving or taking the bus.
There are plenty of options for getting from A to B in Dublin. It is a fairly compact city, which means walking and cycling are viable options. You can walk from many of the city's outlying districts to its centre in around 30 or 40 minutes. But the public transport in Dublin is pretty good too.
U.S. citizens are permitted to drive in Ireland for the duration of a visit up to 12 months as a tourist. If you wish to apply for an International Permit for use during your visit you can apply through the AAA in the U.S. – you can find more information here .
The best time to visit Ireland is during the shoulder season (May, September and October). During these months, you'll find less crowds along with cheaper flight and accommodation prices. These months experience mild temperatures, plenty of dry spells and there's a packed festival calendar.
Quick and Green TravelSkip the buses and traffic on the road and instead treat yourself to spacious and comfortable seating, access to the Café Car and Quiet Car and many more thoughtful amenities onboard the train. Rail travel is at the head of the class when it comes to eco-friendly travel.
Riding the bus is often much cheaper than taking a flight, and allows people to evade airport hassles. But trips can take far longer than advertised and disruptions can hit buses as surely as they hit planes.