Lynne,
You're going to do fine. Tonya was right, that is about how it goes. The brown spongy thing is a betadine solution.. the same kind the surgeons use to "scrub in" with. You shower with it even though they do prep your skin with betadine in the operating room to remove any extra flora or bacteria from your skin prior to surgery.. it's for your own safety.. just make sure you really clean your belly really good.
They do ask if you would like a valium.. TAKE IT.. I slept like a baby until they woke me up to shower. Of course I worked the night before over night and didn't sleep that day either so I would have probably slept anyway but still..
Good luck to you.. my thoughts and prayers are with you for a safe and speedy recovery.. let us know when you get home.