There may be some singing, likely some beers, but the Principality Stadium won't be at capacity this weekend. Instead of being full of rugby fans, the visitors will be Plaid Cymru members and just like the hierarchy of the Welsh Rugby Union, the political party's upper echelons too have big questions to answer.
Last year, the party had a Senedd election that was fairly dire. There is, depending on who you speak to, a differing level of acknowledgment about just how poor it was, but one thing that was accepted is that the tactics employed weren't right and when it became clear they weren't working, changes weren't made quickly enough. Before the election the decision made was that the party would run a presidential campaign, putting Adam Price front and centre and up against Mark Drakeford. But that backfired. He was up against Mr Drakeford at a time Covid had catapulted the First Minister into public consciousness and popularity no-one expected when he was chosen by Labour as the replacement to Carwyn Jones.
But Plaid Cymru was not quick enough to react and it showed in the results. Some already think it took such a backward step it will take longer than the next Senedd election to make any gains again. That result caused damage, not just to egos but to the reputation of the party in terms of its ability to campaign effectively for an election, and, more crucially, happiness in the ranks.
