My advice to others would be to breakdown the meal in to quarters, set small goals for each part of your meal. Know what foods you will eat a lot of before you actually eat, that will give you a great idea of what amount of insulin you will need. I have found in the past that small plates work best, I will often grab a bread plate to have my main meal on. A bread plate is around six to seven inches, a normal dinner plate is anywhere from ten to twelve inches. It is amazing how many calories can be added to a plate that is four to six inches bigger. A smaller plate also tricks your mind, I'm so use to having one plate meals that my mind will be like another plate of food?? No way I can't handle that!! It is an evil trick to play on yourself but trust me it works.
I also find that talking to the people you are with during your meal helps you eat less. Yes you may be labeled a loud mouth but you will be eating less. In the end my best suggestion is to enjoy the day, and enjoy the people that you are with.