Take it from someone with about 6 different wetsuits for all possible occasions. I am a wetsuit veteran.

Do not pee in your wetsuit if at all possible. It makes the neoprene stink somethin' fierce.

Now the reality is.... you will pee in your wetsuit sooner or later. If you do, rinse it out really well and wash it with a mild shampoo. No need to buy the expensive wetsuit shampoo.

Hang to dry in well ventilated area but in the shade. Dry inside out. Make sure you turn it all the way inside out, if arms/legs are bunched up or twisted it will affect the seams and you'll be more likely to experience a wardrobe malfunction similar Janet Jackson's at the Super Bowl.