Every week, especially Friday and Saturday, there are group sex
parties around, ranging from 3somes to multi-somes. Most of the
people are mature - late 20's to 40's. Participants can be locals
and foreigners.
Unfortunately, they only welcome people they know well....and they
only welcome couples (either married or attached). And there is no
way to bring a prostitute and claim that she's your regular partner
because they'll get to know you guys well for some time before
inviting you to join (through outings, drinks, meals, etc).
They are quite used to spotting fakes because there are many who
try to get in.....some bring prostitutes, some claim at the last
minute that the wife's period has come and whether they can come
alone, some this, some that. All kinds of funny excuses lah.
Local parties are different from sex parties overseas where they
usually have more guys than girls (which is supposed to be the
right way, since girls can take much more than guys,
sexually).
And no, they don't require HIV testing or anything....so I wouldn't
recommend going to one of these parties nowadays.
Besides, its nicer in the movies than in real life. In real life,
the players are not always good-looking, sexy or expert....and
you'll have people watching you while you try to get it up. Not
easy for many people (including experienced swingers).