I take a gallon of water with me to leave at respawn. The last two games, lazy fuckers have drunk the lot. I don't mind helping a man out, but leaving me dry is taking the piss, especially mid-viral borne pandemic.
I had more in the van, but next game I'm spitting in the bastard loudly and demonstrably before game on...
Figure a litre plus an hour in this and you'll be fine if you know the signs of heatstroke to watch out for.