Haven't read all replies, most of first page. I agree with Lady Lee (no big surprise there).
It's not only JW's who aren't totally open to the idea of having grown kids come home & sleep together with their dates. My brother in law will not allow it in his house, period. His 3 daughters are approx. same age as xjw & cj's......and it is just not allowed. Even if they were engaged, and/or living together.....it would not be allowed. It's his house....and he's a Methodist (and not that devout) - and really quite open minded about many things.
When he & his fiance' visited his mother & stayed the night, HE insisted that they stay in separate bedrooms (even though they lived together) - he felt he owed it to his mother not to make her uncomfortable in her own home. He was The Guest & felt she had offered enough in opening her home to them.
In our house? If my grown kids came home to visit & stayed the night with a person they have a long term, serious, arrangement - I'd go for it. Heterosexual or homosexual - it's not proper to draw the line now, eh?
However...............if I had young teens in the house? I think I'd answer this thread differently.
I'd certainly ASK the visiting couple if they'd mind terribly if they stayed in seprate rooms, if I or my husband was uncomfortable with the idea. I just can't imagine a GUEST (and a grown child is still coming in as a guest) being so rude as to demand to have the right of sex - even though it made their hosts/parents terribly uneasy - or that sustaining from sex for a couple days/week would be injurious to their bodies/egos.
The "free time" built into the schedule for the guests makes good sense though. Guess it depends upon family relations/nationality more than the jw aspect.
Good luck with the visit - and enjoy!
waiting