Hi Kuku,
to start off with, who are you to question them and how does it even concern you? You should really be thankful that they even bother to give you that little attention you are seeking for and clarify themselves which they can choose not to.
Why not try applying to join those events and witness it for yourselves to feed off your curiosity instead of making the hoo-haa here? Isn't it better for you to come down and judge the decency of the event for yourself than asking them behind that screen of yours when they could easily deny?
Afterall, all events are
meant to be good clean fun. But everyone has their human rights. Whether to have sex or not, it's a mutual thing between that couple. JAM has no say on that. So long as the people there are being respectful to each other, i dont see what's wrong with them popping by the hotel on a mutual agreement after or even before event.
Fyi, before you jump into conclusion, i'm speaking this up on a general basis. Not particularly with the JAM. Even if whatever nonsensical rumours/truth you heard, no one should blame the organisers as they too cant take control of each and everyone in the gathering.
But bottom line, it still voice down to, it doesnt bother you and affect you in any ways right? I dont see a point why do you have to invade on their sex life. That's privacy and you should learn not to be rude.