We have a compost toilet on our farm. 20 litre bucket, and saw dust to cover waste.Our rule (for the boys) when you gotta pee, find a tree.
Nothing beats walking around in the nick (as sometimes happens for a nocturnal visit) , or wearing a skirt, or dress with no panties, and just doing wee while standing.
I rarely go out in public fully dressed. But when I have, I have sat to pee.