Agreed. My schedule is exactly the same as yours (ceremony at 5:30, cocktail hour at 6, reception at 7) and I didn't indicate AM or PM on my invitation. I didn't feel it was necessary, and I had a professional stationer helping me with the wording of my invitations, so I trust her judgment.
Clear liquids, including water, clear tea, black coffee, carbonated beverages and fruit juice without pulp, up to two hours before surgery. Very light meals, like toast and tea with milk, up to six hours before surgery. Heavy meals, including fried or fatty foods and meat, up to eight hours before surgery.
Foods that are safe to eat after oral surgery. After oral surgery, stick to soft foods, such as soups and yogurts that are rich in Vitamin A or C, for the first two days. Avoid any crunchy or hard foods, such as popcorn or pretzel sticks, for six to eight weeks. You also should eat foods that are room temperature immediately following your surgery.