Hi there ! Congrats on getting banded. Remember it is a "Journey" not a "quick trip". As far as exercise plans go, if you want something that will make you confortable at first I would go with Curves. It is only for women and (I have gone to Curves) the women who do go there are generally very supportive. When I went I lost several inches along with going to Jenny Craig. Once you see that working maybe you will be confortable enough to go to the gym on the base for free. If you are going to have to move with the service, you should always have a gym available to you.
I belong to 24 hour Fitness. I used to be uncomfortable going to the gym because I thought everyone was checking out every one else, but you know what? Everyone was too busy checking themselves out in the mirrors to worry about anyone else!! LOL. No, really it is true !!!!
Good luck to you, I hope everything goes well for you.