Been a long time since I lived in Dublin and things may have changed since then (especially with the arrival of digital) but here’s what I used to do. If I needed slide film in a hurry, I tended to get it from Image Supply Systems (ISS) simply because they were city centre based and always carried a good and varied stock. But my normal source of film (when not in a hurry) was through 7dayshop.com.
For dev. I used to bring it along to Filmbank on Baggot Street and they’d normally have it ready for me within 3 hours (I never asked for a faster service because 3 hours suited me – dropped off during my morning break and picked up during my lunch break).
I sure am glad delvopement of E-6 question was asked. I ran into this issue today now I don’t have to ask :) Now I just need to find the Filmbank, that is nice and close for me.