I recently had a hen party 16 of us girls we had our activities organised for us and was very reasonably priced. We then went about the nightlife in Carmarthen and cannot say enough about how good it is we had a blast, the bar staff and atmosphere was brilliant and there's plenty of bars pubs and clubs to keep any party happy till the squeaky hours of the morning. We gave my sisters hen do in march 2014 and wouldn't think of going anywhere else.
I would recommend visiting Carmarthen and seeing just how beautiful the area is, beaches, castles, nightlife, pubs, clubs, good taxi firms are fantastic and friendly and 24 hrs, nice local characters, felt well looked after, take always open til all hours plenty choice of eat in and take away ranging from kebab to Chinese and Indian cuisine and a good base for activities in the day and some good real ales and clubs in the evening. They even have a 24hr tesco! We will definitely be going there again !