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.
One medium-sized navel orange contains 17.56 grams of total carbohydrates, which includes 11.9 grams of natural sugar. Sucrose accounts for half of the total sugar. Another 23 percent of the total comes from glucose, while fructose represents 27 percent of the sugar in an orange. One navel orange has 69 calories. Almost 48 of the total calories come from sugar because each gram of sugar provides 4 calories, according to Iowa State University. Impact on Blood Sugar. The glycemic index rates carbohydrate-containing foods according to how much they raise your blood sugar. Oranges have a glycemic index score of 40.