Summarize this article:

Ask for sandwiches without the bun and without ketchup. Learn which dishes you can substitute for high-carb sides like French fries. Choose low-carb foods that you have never tried before, particularly at restaurants with an ethnic flair. You’ll find a variety of new dishes and flavors that you will enjoy eating even though your carb intake is limited.

Summary:
Become a fast-food expert. Try new foods.