Annette,
This is the first time I have ever posted on this forum. I wanted to write something as I feel your pain. I was where you are now almost 2 years ago.
Yes, it will be the longest and most surreal night of your life; scary too. The only words of comfort I can give is for you to know that I and others on this forum are thinking of you.
I hope your dad passes peacefully. Big hug xxxxxxxxxxxxxxxxxxxx