I'd like to clarify something about the outdoor shower:
I grew up with them down the shore in northern NJ and now enjoy the one at my uncles place in R.I. they are exactly like an indoor one, just outside.
Never, would I consider and outdoor shower a real outdoor shower WITHOUT Hot water and cold water. Ignore those stupid catalogs that try to sell the "outdoor shower" which is really a shower head on a pole.
It's not an outdoor shower if the freakin' thing is just hooked up to the garden spigot!!! For Pete's sake!