You will be fine and you are in good hands. My friend's mother had the band performed by your surgeon and spoke very highly of him. Honestly, most of us have 'failed miserably' with our weight for many different reasons. Be proud that you, as well as everyone else here, are confronting this and making a change to better our lives.
I do an online radio show as a hobby and Im constantly giving this advice to friends and listeners who struggle with problems. Please relax and realize that after tomorrow, your life will change and for the better. It wont be easy, but what ever is. Not to mention you'll have so much support on these boards. I've only been on here for 2 weeks and Im amazed at the positive vibes and support. So many success stories are on these boards and they have me psyched about my surgery. I wish my surgery was tomorrow, but its not for another 5 weeks.
What has also impressed me here, is the number of people who lost all their weight, yet still find the time to try and consistantly help others here. It's a breath of fresh air. I expected to be just an observer on the boards and not write much. It's hard not to try and help others when there is so much support being offered back.
I started my preop 8 weeks before to get a head start with my weight loss. The idea was to have shakes for Breakfast and lunch, as well as in between meals. dinner would be a very light meat and salad. Even though I've dropped some weight, I blew it several days with Italian food and ice cream. I realized being mad isnt going to change what I already did. So I just tried harder the next day.
No matter how much you get mad at yourself, cry, worry, stressed about your preop diet, it's not going to change what you did up until now. Just relax, get back up and try harder next time. You will be fine. And good luck with your surgery.