They should install a drain instead. Clearly those people need to pee...

Nice! How did that begin? Did your wife take some convincing?  Do you (or she) ever step out of the tub to pee? If so, are you standing there naked?

A few days ago when my wife and I were engaging in foreplay prior to sex, she dribbled a little while switching positions.  She had been lying on her stomach, and I had been giving her a (naked) massage. That's one of our normal activities leading up to sex.  It was time to switch to the next part. She stood up next to the bed, and all of a sudden she announced "I just peed my pants a little!" But she wasn't wearing pants, she was naked. So I said "You're not wearing any pants!" She said "Well, it sounded better than "I peed down my leg!" I grabbed a towel, put it under her hips, and she laid on the bed on her back. I went down on her, hoping to be able to enjoy some of the precious liquid. But unfortunately there really wasn't anything there. It must have either been a very small amount, or just a phantom feeling.  Still, kind of hot that she was so nonchalant about it. I've discussed our relationship here before. She's not into pee, but knows I am, so she doesn't mind indulging me from time to time. 

My wife and I always go naked in ours and we back onto a fairly busy road just have to be quick with house coat removal 

As a hot tub owner, I frequent hot tub owners' online discussion forums. They're a good source of info, tips and ideas. The topic of peeing in and around hot tubs is actually discussed fairly frequently. There's not really any general consensus on "etiquette," it's more of a general understanding that people are going to pee in the tub, so it's usually more of a focus on how to treat it afterward, rather than whether or not to do it in the first place. But over the course of reviewing these online discussions, it has become apparent to me that peeing in hot tubs is pretty common, it's pretty easily treated (with "shock" and similar), and it's not really considered a big deal. Hot tub owners have the general attitude of "pee happens," especially if alcohol is involved. Some do speak of having a designated "pee spot" as well. Often in the grass, behind a garage or shed, etc. Peeing over the edge seems to be common too. Also, I have been pretty surprised by the percentage of hot tub owners who go naked. I wish that was an option for my wife and I, but our tub can be seen by neighbors unfortunately, and she'd never go for it.