I played NTFL, and the conditions are tough. Guaranteed 100% humidity. I would tape elastoplast on to my fingers to try and assist my marking of the ball, to combat the greasiness.
And it is very fast in contests, it has an effect on disposal by hand or foot, as do the sapping nature of the conditions. I can remember being pleased to come back down south and be able to get my handballs away, instead of having 20 pairs of hands to get through.