Word of warning about Liffey Valley cinema - I havent been there in ages and was going to go until a friend said she wouldnt go again after the price she paid for her seat. Depending on the film, the cinema blocks off certain seats and makes you pay extra for where you want to sit, usually the most popular seats (friend wanted to sit in the middle of a row in the middle), she ended up paying another €2.50 on top of the €9.70 for her seat, if she had sat at the edge of the row, the 2.50 wouldnt have been applied.
Plus the pick and mix there is the dearest in any cinema Ive been in!