Take a nice cleansing breath. You will be fine!! The OCC is very safe and clean. They give you bottled water and capri sun/broth after surgery. My hubby and I were very nervous about the same things as you (getting sick and worried that it would be dirty). He ate and drank in Mexico and didn't get sick or the runs. You will be fine! I once told some random person that I was thinking of getting the lapband and they did a similar thing. You aren't enough over weight, you don't need it, hire a trainer...etc. You can only do what is going to be right for you!! After you get there you will feel much better.
I have lost 37 lbs and have not deprived myself from pretty much anything. I have had bread...more then one bite, chewed and chewed and chewed, I have also indulged in a glass of wine on more then one occasion. The band is a tool, not a fix all. It is a life style change and it's not a bad one, might I say!!! I have following the guide lines and have been working out 4-5 a week. I feel great and I am so happy that I did get the band! Good luck on Tuesday and let us know how it goes!!
Brook