Pre op..

HI, I GO AUG 20TH FOR MY EDG, NUTRITION CLASS, WHERE I PAY MY FEE AND THEN THE NEXT DAY THEY WILL CALL ME FOR MY SURGERY DATE. NURSE SAID HOPEFULLY WITHIN THE NEXT WEEK AND A HALF. I HAVE SEEN A LOT OF PEOPLE TALKING ABOUT THIS LIQUID DIET BEFORE SURGERY. I WANT TO TRY TO DO THAT, BUT WHAT DO I NEED TO DRINK? PLEASE GIVE ME IDEAS, I CAN MAKE SMOOTHIES WITH MY NINJA, BUT WHAT KIND OF FRUITS AND FOODS SHOULD I USE? I AM HAVING MY SURGERY AT EMORY IN ATLANTA. SO EXCITED. HOW MUCH PAIN CAN I EXPECT TI BE IN?? I TEND TO HAVE A HARD TIME WITH COMING OUT OF MY SLEEP, ESPECIALLY IF I'M IN ALOT OF PAIN, I TEND TO FREAK OUT!! Any advise would be greatly appreciated!!!!