I would also add South 51 on south main street in Wexford, nothing there that the rest won't have but a nice airy pub if you like that and shows all the sport. If you are down around the Hook, Roches Bar in Duncannon has a nice selection of beers too but other than Metalman not sure about draught.
If you are going to go from Wexford to Dungarvan then there's a few options in Waterford City too if you are not driving. Revolution, Oscars, Philly Grimes, The Reg all have a selection and lots of others carry the local breweries. The app is definitely the way to go if you can download it.