What are the most effective macronutrient strategies to employ when dining out in order to maintain a calorie deficit, and are there specific restaurant meal selection criteria that can be used to optimize nutrient intake while minimizing caloric excess? Considering the typical American restaurant meal averages around 1200-1500 calories, what adjustments can be made to portion sizes, food choices, and condiment use to bring this number more in line with a calorie deficit target of 500-750 calories per meal? Additionally, how can diners effectively communicate with restaurant staff to request modifications that support their calorie deficit goals, such as holding added fats, sauces, and cheeses, or substituting high-calorie sides with lower-calorie alternatives?