Curious to hear if wanting to watch a woman pee or maybe having her pee on you in the shower is something pretty common or not...

"No extra charge for watching." she said.  "I do normally charge $100 extra to pee on you"  

I declined and thought it was funny.  Not naming the girl, as she is still around.

I'd say that amongst kinky folks, watersports is a common fetish.  It's sterile (safe) and easy to have fun with!

Amongst more vanilla types, I couldn't say how common.

Personally I am a big fan of watersports.  I love to stay very well hydrated as it makes me skin and hair all healthy and luscious-looking.  Water in, water out!  

It's come more to the forefront and there are many ladies who don't mind sharing their aquatic talents and divine goddess nectar with you. I do know that I like to know ahead of time and also seem to prefer a shower setting as well as opposed to boudoir settings for ease of clean up.  

Enjoy darling!
Grace

FYI Kiddies urine is "NOT STERILE" Google it if you don't believe me.