I know how you feel. I was banded on August 24th. I am the baby (44) of the family, and all of my brothers, sisters, and my mom were totally against it. They are all at normal weight, and can't understand why I can't just stop eating.
I went full steam ahead, and now they are all very supportive. My 82 year old mother is so funny! I've lost 22 pounds, and she is so proud of me.
I think they get it in their head that we won't be able to enjoy food anymore, and in my family that is comfort, fun, and what we do when we get together. My friends supported me, which was a blessing.
I wish you luck!!!