That's exactly what concerns me- hate being hungry, too. Think my husband will be put through the wringer for the two weeks, too! I hope it gets better for you after the first few days.
I am 63 yrs and should be getting a surgery date soon. Right now I am very concerned about the the 2 week pre-op diet coinciding with my pre-op nerves. My other concerns besides surgery complications are dealing with head hunger and hair loss. But I know if I haven't managed to lose all this weight in the last 30 years I am not going to without this type of help. So glad there are 60+ people to talk to.