Hybrid grass.
Drainage.
Vast majority have 1 game every 2 weeks and well paid groundskeepers get science involved and prepare the ground professionally. (Tours aren't even able to walk on Anfield pitch)
Here, we have crappy grass, mediocre drainage, we play at least 3 games of senior football on a wet pitch. Some have juniors play on the pitch, I imagine some have juniors sneakily training on the pitch, if not their first team training on it occasionally.
Blacksmiths and Stockton = 2 best wet weather pitches. But try and play there on a sunny day and slide/fall on it, nursing grass/sand burns for weeks.
And what do you expect, we can't even get our premier Asian Cup 3rd place playoff stadium up to a decent standard

. I bet all the NBN grounds would be in better condition than that minefield. We should at least paint the sand green.