living on that route, i would tend not to rely on it if at all possible; thankfully I also live on the luas line too, so that's my pleblic transport of choice.
There's also a 44 bus goes the same way, or could walk up to dawson st and get one of the 14s - they all go up to parnell st. Maybe the 15s do too, but I dunno.
Would be around 8 or so before I could be in town to begin....