Hi
Most airlines offer diabetic, kosher, vegetarian....food upon request. You don't have to pay extra for it. From what I have noticed...the only difference between a regular meal and a diabetic meal is that they would serve you (for a dessert) some kind of a fruit yogurt, or fruit salad instead of a cake.
Don't think that there would be more food in a diabetic meal, in fact, more likely there would be less or maybe just more veggies than in the ordinary meal, but in any case, less satisfying :P
I don't bother ordering diabetic meal anymore, it's not like there's a lot of food in the first place, and if you think that the meal was just too much, you can always skipp on that little piece of cake they might serve :P
Good luck and have a nice trip
