Well, you do have to have somebody escort you home(probably mostly for liability reasons)
Also the fasting and purging preparation sounds pretty bad.
Ask if you can do the magnesium citrate & dulcolax prep. Two pills and a eight ounce bottle of stuff is a lot easier then the gallon o slop prep they used to give you all the time.
Get a pack of Preparation H wipes for clean up.
The one thing you will want to do is make sure you drink as much water as you can as late as you can.