I was thinking of something very similar for the inside of my new tent (when I get it) which WILL have standing room.
Although I would be tempted to make a permanent inner toilet/shower compartment in mine.
(I'm full of these bright ideas, but never seem to have the money or inclination to actually do any of them)
I have to agree with a previous poster who mentioned that there is a big gap in the market for showering / bathing solutions for young children. My boys are aged 2 and 4 and HATE the regular cubicle showers, more so for hair washing. Lots of our friends have kids under 5 and have exactly the same problem. I have often ended up splash washing them down in the tent in the pop up sink with warm water from the kettle mixed with cold to get the right temp. Hair washing is still a problem though.
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