Fellow cabin crew member here from another airline (not Aer Lingus),
Good luck to you guys! And huge support to you. This is unfair they have done this without agreement and imposed these conditions.
For those of you who ask - the 900 max EU is only FLYING HOURS - there are more hours in a week ie. briefing, security checks, boarding, disembarking and turnarounds where we are working but are not counted as flying hours. So don't assume we just work for a few hours a week! We can do 2000 in a year (in the UK!)
Again, to all you EI crews, good luck - many companies staff are seeming to be going through disputes at the moment, we should all be in it together (good to see your pilots are supporting you!!!) We are all flying staff!