We humans have a tendency to talk about the bad and hide the good away in our hearts a little too much I think. Lap band is highly successful and if it didn't work surgeons would stick to bypass.
There is a lot of bad press on the internet for nearly anything you want. If you were on amazon searching for some new Nikes and there were 100 reviews on a shoe... you can assuredly find that
10 of them are less than spectacular. Which ones are people most likely to read? The negative. We are always more interested in what could go wrong rather than what should go right.
If you are unsure so more research, wait, go to a support group, or talk to the surgeon. You never want to go under questioning yourself.
It'll be ok!