Yes...today is the last day of my pre-op diet...tomorrow is surgery...YAAAY!!! Since last Thursday, 6/20, I've had 2-3 protein shakes a day, 60 -80 oz crystal light drinks and 1/4 - 1 full bottle of Isopure protein water (depending on if I had 2 shakes or 3) I think this one is pretty restrictive, but I believe it will be worth it in the end! I've lost about 9 pounds, so I'm pretty happy with that!