Well, you can use diapers or my urologist ordered a Foley for me. But I doubt you will need anything to eat, as you will show up at 9ish, and get into bed, she will hook up a bunch of wires, and probably take a sedative. You will be woken maybe a couple times,and leave for home before 7ish, believe me its no party, but no pain and you will find out whats going on. I stop breathing 45 times in one hour. Friend of mine was over 70! Your clothing is fine, although I just used the hospital gown, as I don't like to exploit.