Cheers for the replies everyone. They are one-way tickets, i am coming back later in the evening on the bus. Lucy are you in Cork? I would love to come see you but tomorrow is a busy day for me so i'll have to put you on the long finger lol.
Another thing, i don't have a credit card so i used my friends card and gave him the money for it, his name is on the sheet/receipt that i printed as my proof. I did it a few times before and thankfully didn't have any problems. I better bring my passport as I.D. just incase but hopefully i'll be ok, just as long as i know i can get both tickets in Dublin thats half the battle. Cheers folks.