Questions: Girl's Behavior

Consider yourself in the following situation: you're in a sauna with your friends (both male and female). After finishing, you want to take a shower. The shower is like in the picture below: you can close the curtains, but you can't do anything with side screens that are semi-transparent:

Consider you don't have a swimsuit on you. You are only in a towel. What would you do?

I don't mean to go into the Mens bathrooms to use them. I mean what if some girls wanted them installed in the Womens room for their use but the manufacturers or Companies where the restrooms were located said "No, those are for men only, women aren't allowed to use them".

Not that girls would ever want to use one, but you never know, there may be some girls that would want just because they're being told they can't... lol

So would it be OK to stop females from using them even if they wanted to use them?

And what about the outdoor urinals like they have in some European and South East Asian countries?

And then of course there are the odd ones that they have for laughs I guess... lol

So what is your take on all this?