Hi! I had my sleeve done in September 2014 after starting the process in June 2014 so I know what you mean about the wait. You have a lot of thoughts leading up to it and some of them are scary.
About wanting to "stuff your face", I hear there are lots of people who do the "last supper" farewell dinner just before their surgery thinking it's a last chance to eat what you want, as much as you want. I didn't do that but thought a lot about it and what I was going to miss. Truthfully, the two months after surgery are hard, but also easy in the sense that you are healing and your stomach is like a baby's....it just can't handle anything complicated so you just have to bull through the soft diets. It was actually harder when I could eat pretty much what I wanted. I missed eating MORE of it, even salads!
Even now, 6 months post-surgery, I still think about being able to eat a big meal, something I can no longer do. BUT, I mostly don't think about it and try to stick to better eating habits. I can eat very small amounts of really great (and high calorie) foods and often have a bite of something I would no longer order in a restaurant and find that it really is enough! I also find that I no longer crave certain unhealthy foods I used to crave. Basically I am satisfied with less, choose carefully what I put in my mouth and make sure it is worth every calorie! I actually think I enjoy what I eat more now than I did before, because I am more awake and conscious of my choices.
Good luck to you in your upcoming surgery and try not to stress!