Alright, I already purchased the heritage card for the UK and I went to www.cultureheritageireland.com and found discounts. Aren't these discount passes free? Back to my original question....do I need to print off a pass for each site or do I just sign one and show it at each site?
You are confusing several different things here. The heritage card for the UK and the heritage card for Ireland are two different things. One purchased for the UK won't work in Ireland. You just show the card at each heritage site you visit instead of paying each admission fee - no passes to print.
The discount pass you're referring to is free, and is for discounts - it is not the heritage card. You print this discount pass and take it with you. It can be used for two people. You purchase the heritage card at the first heritage site you visit (or beforehand online) if you think you will visit enough heritage sites to make the purchase price worth it (if you are only going to a few sites the individual admissions may be cheaper).
So where can I buy one on line for Ireland? Thanks so much for your help!