Why I'm wading into this thread is beyond me...
My general felling towards overnights is like Wakeups, but without the attitude. Same with taking girls on vacation. I don't want to pay them to sleep, and I don't want to pay them to have a vacation when all the expenses are paid for.
I understand that they are not making money if they go along with my attitude, and of course if some sex is involved, you have to pay them something. I just won't pay them for "nothing."
Needless to say, I have not done either because no lady would go along with my attitude.
However, having said all that, I did nearly have an overnight with a provider who seemed to enjoy spending time with me and was willing to name a very reasonable price for the overnight. I just couldn't fit in the time. And now, she is out of the business, so that opportunity was lost.
I actually would love to do an overnight, as long as the price is close to what I would normally pay for the WAKING hours portion of it. And of course, all the other criteria people mention -- compatibility, enjoy each other's company, want to snuggle, cradle, and converse during the down times, etc.
But, I'm not paying for her to sleep...