dlav,
Unlike most UK charter airlines, there is no mixed flying within Aer Lingus. I doubt this will change for the foreseable future. This also tends to suit most people - some prefer Europe and other prefer drinking state-side (& now the desert!).
The A330 is crewed purely on seniority. There is a big difference between the lifestyle on Europe and the A330. Europe is considerably busier, and hence most crews are maxing out on the hours. The A330 now is operating to Malaga and Nice in addition to the US and Dubai. It seems like A330 crews are approx 750 hrs per year give or take!
The atmosphere at EI is like most companies at the moment, in a state of transition. If the privatisation finally goes ahead this autumn, then big changes will occur over the next few years. According to the CEO, long haul will be expanded dramitically, which should make for some interesting night stops. Europe will also see some dramatic expansion.
Being a relatively small operator, you have the advantage of knowing virtually all of the crews. Unlike the likes of BA etc, your a name and not a number.
Flight Ops managment are very approachable, and training side of things is excellent. Nobody is trying to catch you out here. If your upto par with the standards and get on with your job, then life is easy. As regards the management from the HOB, then thats a different story and a thread on its own.
Its not paradise here, but as other who have left EI - it certainly isn't easier or better on the other side of the fence.