We're going to use public transportation and I'm trying to find bus tickets from city to city. I've been using Transport for Ireland but when it tries to connect me to Bus Eireann, a screen comes up that says "Site cannot be reached." This also happens when I try to access Bus Eireann directly. Any suggestions? What is the best site to find and book bus tickets in the Republic of Ireland? I've been planning to reserve in advance or is it safe to just purchase tickets on the day of travel in late April - mid May? Thanks!