Well, Yes & no, It depends where youre from, Accents from dofferent counties differ greatly, alot of people wont be able to understand a thick Dublin accent. Even though the couinties are pretty close together compared to other countries the accents are completly different. A few of the main ones are
Cork: people ther mess up thier O's "Inn fram Cark!"
Dublin: 333 = Tree huundret an turti tree
Limerick: you = Ouu. nothing = Naa'In. story = staary
Up north (ulster): Real bouncy accent goes up at the end of sentences. Im from county Cavan = Ui'm fram caunty Caavan.
CAnt really think of other examples but there ya go.