Yes, it's all real. Unfortunately, I think the pee scenes are going to cease for awhile, no idea why. I'm not really purchasing tickets anymore because I too loved the watersports here.
Regarding your wondering about the pee being real...
Perhaps you need to hydrate better? When I piss it's quite clear, but I lead a very active lifestyle and drink 2-5 liters of water a day. Generally my piss is clear, too. (Not so much in the morning).