Twice while elk hunting we went 10 days without a shower.
We did do the tub wash around the campfire thing.
When we got into town we stopped at a pizza hut for something to eat and had the fastest service i have ever seen.
I took a bath and had to unplug the drain 2 times and had to it once while taking a shower.
I sure felt smaller after that.
When out hunting i can go for days but after 3 or so i need to hit the head with some water.