Ah, but that's not the point.
The Cas game is almost 120 years to the day since the first fixture at Knowsley Road, Saints have been marketing the game quite heavily for the last few months and it would seem many people are travelling from far and wide to attend. Any other game, any other season, it would not have been an issue but Sky are not the favorites at the moment on Redvee.
On top of which, I think it very wrong that Saints and Warrington are playing on different days. Surely the drama on the Friday night is who will come second with neither team knowing quite what the outcome will be. As it is, Saints will kick off knowing exactly what they need to do to clinch 2nd place, not a very "fairplay" situation.