Hello Barb!
I am 29 and live in Houston, and I was banded in July. Like you, my family does not know because they would not understand. I mentioned "thinking" about getting banded about 6 months ago to my mother and I got this huge lecture about how dangerous it was and I should not resort to surgery to solve my problems. It was at that point that I decided I was not going to involve my parents at all!
I have a few co-workers that are a wonderful support group and my husband took me to the surgery. Outside of them, no one else knows.
You will find alot of support here too!
Good luck and let me know if you need anything!!