A little advice. The shit they make you drink and the diet ( if they still do that) isn't that bad. I just didn't eat anything for 48 hours before the procedure. But the 12 hours before when you can't drink anything was a fucking nightmare. I have never been so thirsty in my life. I brushed my teeth like 8 times that morning just so I could get a little water. I mean I was ready to say fuck it and the woman made me go through with it. So do yourself a favor, before the time comes when you aren't supposed to drink anything, make sure you drink so much fucking water you feel like puking.
On the plus side the anesthetic is fucking top shelf man. When I woke up I was in a different room and the first thing I saw was the cover of Umma Gumma. Turns out my doctor is a Pink Floyd fan and had a bunch of albums on the wall in his office.