Keep in mind that if you camp on the "oh-so-friendly" Northeastern United
States here you'll need a drain floor to capture the grey water.  The first
thing the park rangers do when they see you putting up a porta shower is ask
if you have grey water collection.

If you are at the Housatonic Meadows State Park in CT they will probably
slash your porta shower to shreds with a bayonet then arrest your family. :)
:)

Bryan