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even a sqidgee wiper at the end of each shower is a game changer. The way I see it - a bathroom as a certain about of evaporative capacity (from a window or a radiator or a fan). The more moisture in the room, the longer it will take to dry and the more than towels will smell, and grout will mold.
Whatever you can do to reduce the amount of moisture, do it. I designed my shower to have as many flat surfaces as possible to it's a 30 second job to get a load of water off the walls/screen/floor and into the sink. Grout all still looks near brand new after 2.5 years.
If you just want to get water out of the bathroom you're better off using a karcher window vac to get off the surface water from bath, shower, tiles than using a dehumidifier.