O'Caroll's usually has a good session.
Old Triangle is owned by "Evans and Doherty" so a good time to be had.
Split Crow is good with hte right band playing, not sure if they have sessions though.
Lower Deck..yeah..McGinty is good. So are The Navigators if you catch them there. No Dancing at the LD though!..shame..
...Enjoy..good time of the year in HAlifax...Slainte!