It’s important to start with a basic distinction: there are people who are on a diet to get in better shape and their reasons to keep the strict rules when eating are not health-related at all. Their situation is easier, since all of the hotels offer low calorie, low carb meals, the only place they might have to avoid is the dessert bar. Though we speak from experience that is usually a massive challenge in itself that can hardly ever be completed!
Unfortunately people who have diabetes or its predecessor, insulin resistance don’t have the luxury of letting go of their strict dietary requirements concerning times to eat, quantities and carbs.