L.A.
Here were the responses to M2KCK's post...
http://www.mamapedia.com/questions/4901516749624770561
No one likes it. But you will sleep. It takes an hour to hook you up. They do use an sticky jell in your hair and on your body to stick the sensors on, but it washes out with shampoo. I pulled as much as I could before I washed my hair. You will want to drive straight home and take a shower.
The room is pitch black.
They are going to give you time to fall asleep.. They will wake you if they need you to reposition.
It is not a natural situation, but it is not a bg deal.
I went back to be fitted for the CPAP mask. And I have now been using it over a year. I was only getting a few minutes of sleep per night. Also was not breathing through the whole night. It caused a bit of a heart problem for me.
So I really have benefitted from it.