I had my surgery March 21. So just a month ago. I too had great success with WW, but always gained whatever I lost back plus 10-15 more every time.
My opinion? If you've had success with WW. You're going to LOVE this! As you know, it's ALL about portion control. This just helps you with that! This is a "tool" to help you. So I don't honestly think you'll see the change that you are afraid you can't handle.
I was excited and then scared too, but now? I'm THRILLED that I've done this. I have told several people that I can't think of even ONE negative thing to say. Dr. Ortiz and staff were wonderful, the facility is beatiful, the hotel? Not what I'd call 5 star, but still very nice and exceptionally clean. If I knew then what I knew now, the only thing I'd do differant is to have done it sooner so I'd have more than 18 pounds off by now!