Flying Fairy,
The aerlingus operation is not really like some of the UK airlines such as BA and Virgin where you can commute rather easily. EI are mainly shorthaul with a large number of busy 4-sector days. Even when you are finally trained for the A330 it is still a mixture of shorthaul and longhaul.
You will find that most people who work for EI in Dublin are at least within driving distance of DUB!