I started riding a four-wheeler a month after my surgery. No more problem than when I exercise. I think I will always be able to feel my port, but it really doesn't hurt at all. I don't think you could move your band, I know my surgeon stitched part of my stomach around it and that is supposed to help keep it in place. Don't care much for roller-coasters, but I doubt that it would hurt you as long as you are well healed from your surgery. Have fun!!