Angelica,
I can't provide you with so much information, as I was not banded at the OCC.
But I can tell you that I was 14 when I was banded (I'm 15 now), and I too was not covered by insurance, but I'm extremely glad that I did not wait till I was 18 to do it. I was even rejected by a certain medical center that said I was too young, but another place agreed to let the surgeon do the surgery there.
I'm here for any other questions you may have.
Good luck!
--TRS