There is currently a lovely Christmas market (26th Nov – Dec 23rd) at Custom House Quarter (George’s Quay), Dublin 1 – complete with gigantic Christmas Tree and Après Ski Pop Up Bar: http://www.ibelieveinchristmas.ie/apres-ski.
I will be trying this out on Saturday (having sampled many Apres Ski Bars & Christmas Markets across Europe) so will let you know what I think. See link below for a list of festive events in Dublin this year. But I have a feeling that the Après Ski Pop Up Bar will be my favourite!
http://www.dublinatchristmas.ie