You'll also want people to RSVP so you have a head count for the caterer. If, on the other hand, your rehearsal dinner will be fairly low-key or small (think: a party at a restaurant or an intimate gathering at your future in-laws' home) then you don't need to be as official with your invitations.
The exact nutritional value of an orange depends on its variety. According to the U.S. Department of Agriculture, a standard-sized navel orange contains 69 calories, 17.6 grams of carbohydrates and 11.9 grams of sugar.
Serving Size and Calories. As a food item packed by nature, it can be difficult to determine the exact serving size and calories per serving of a navel orange. According to the USDA Nutrient Database, a 2 7/8-inch diameter navel orange contains 69 calories. Carbohydrates, Fat and Protein Each 2 7/8-inch diameter navel orange contains 17.5 g of carbohydrates, 3 g of fiber, 1 g of protein and less than 1 g of total fat. Carbohydrates turn into glucose during digestion and act as a source of fuel for your cells. The USDA recommends 45 to 65 percent of your total calories come from carbohydrates.