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.
Calories, Sugar and Fiber. One clementine orange contains 35 calories and 6.8 grams of sugar. All of that is natural sugar, which means it has a place in your healthy eating plan because it supplies energy and fuels your body. A similar-sized serving of mandarin oranges canned in juice contains 38 calories and about 8.25 grams of sugar, of which most of it is naturally occurring sugar. The same amount of mandarin oranges canned in syrup has 61 calories and 15.5 grams of sugar.