Note Sunday is the Dublin City Marathon (route)! This means lots of the city centre is blocked off from early (starts 7.45am). See the details of impact on traffic and public transport here.
Note the hours go back on Saturday night so you get an extra hour in bed on Sunday morning (except you have to get up early to avoid the Marathon).
Sunday is also much more refined than the noisy, boisterous Saturday and Sunday is the perfect day to enjoy fantastic RPGs, boadgames and CCGs, and the our award winning charity auction in the evening.