WHY DO THE JAPANESE SAY FLITHY GAIJIN??? Because they don't wash their rice.
A very very necessary part of cooking small-grain rice is to wash, and soak it for 10 minutes. Pour the rice in, add cold water, stir for a minute, drain after 5 minutes, and have a second go, draining (as well as possible) after 10 minutes.
Obviously a camper would save the drained rice-water. I find it's still drinkable and goes into the water bottles for the next day's traveling. Could also be used for other cooking, or even cleaning up.