They include Sharon Morgan, who won last year's BAFTA Cymru Best Actress award for her role in Martha, Jac a Sianco, High Hopes star Boyd Clack, Skins star Siwan Morris and Belonging stars Oliver Wood, Huw Rhys and Amy Starling.
The actors have been rehearsing since the beginning of February for the inaugural show of in (just over) a year.
(Photograph of Boyd Clack, Sharon Morgan, Oliver Wood, Huw Rhys and Amy Starling 漏 National Theatre Wales)
A Good Night Out in the Valleys will tour five miners' institutes, in Blackwood, Blaengarw, Pontardawe, Bedwas and Aberdare and each performance is set to feature live music from bands local to each institute's area.