You will get more restriction when you have more fills but the fact remains that the band isn't going to reach out it's hand from your stomach and keep the fork/spoon away from your mouth. The band CANNOT and will NOT "make" you stop eating less. Yes it makes you fuller quicker and when you overeat the sensation is not the most pleasant, but nothing about the band will keep you from eating. Only you control what goes in your mouth; not your band.
Self-control is key as is willpower, without it the band does you no good.
My 2 cents.