Celtic had a full strength team I think. I was told that they did not have an under 21s match so all players were available, with a large scattering of GB starlets !!!!
LMR were missing 2 players though, I think LMR have a big advantage when it comes to mind games if they meet in the final. But you are right with what you suggest, the RFL would love nothing more than Celtic winning and showing how good the youth set up is in Wales.