My own mom doesn't want me to have the surgery! I agree, these people don't want you to change. I lost friends when I got a divorce, I can only imagine what will happen after I get the surgery and start losing weight. True friends will support you.
Like it was mentioned so many times here, this is something you are doing for you. Don't worry about what others say or don't say, do or don't do. In the end, it's your body and your health. We have enough problems with our own insecurities, we have to stay strong. It's the beginning of a new life and if those people aren't going to support you, they never really have. It's all about you. Just keep imagining how great you are going to look and feel! I'm with you though, I don't plan on telling anyone I don't have to.. I won't even tell my mom. It's my decision and I'm happy about it!
Good luck with your banding!