as a husband (ex) and father, i am ashamed to admit that KTVs and Massage Parlors (Saunas) are very real and very accessible here in HK (and surrounding Macau, China, Taiwan, Korea, Japan, SE Asia). Most men have been at least once, and many (myself included) have been many more times than they would care to admit.
Bachelor parties, client drinks, a round of golf, a random boys' night out...all too often end up in either one or both of these establishments, and despite the best intentions, a night out at these establishments never ends innocently. Without exception i have seen friends, acquaintances, business associates, colleagues, clients, expats, locals, old, young, single, married, fathers...all cross the line of what would be considered acceptable in the face of their respective gfs, parents, wives, children, etc.
a night at a KTV starts with beer, whiskey and singing, and even with the tamest of friends, ends at least at first base - quite often at third (for those not familiar with baseball: http://www.urbandictionary.com/define.php?term=third+base) (I've even been to one in Taiwan where the evening ends with a group tug - everyone sitting in the same room!). The option for a home run is also always available for an additional charge.
if you're drunk and tired, or after long day of golf up in China, chances are you will find you and your company ending the day/night at the local sauna (rub n tug). While a night at a KTV could start off with innocent intentions (it never ends that way), there's no pretense of such when visiting a RnT. There's only one reason to visit a RnT. As the name suggests, it starts off with a rub (normal massage) and ends with at least a tug (you are offered your choice of release with varying price differences).
wives and gfs: don't be naive. i know you want to give him the benefit of the doubt, to believe that he doesn't participate and that he has more restraint. But I guarantee you, if he's been to one of these places, he's gone to at least first base, and most likely further.
guys: i urge you to think twice the next time you go and "have some fun". While it is extremely prevalent, and "accepted" in Asia, it doesn't make it right, it's still cheating, it's still deceitful and more likely than not, you will lose your loved ones if they find out. i'm sorry for what i've done, but it doesn't change the fact that i'm now single again - which sounds a lot more "fun" then it really is. if my ex is reading this...too little, too late, but i'm sorry.