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 for Light Diet. You can eat yogurt on a light diet. Some of the foods you can eat on a light diet the day before surgery include yogurt, lean meats, eggs, rice, bread and rolls, pasta, cold cereal, cooked vegetables without skin or seeds, peeled apples and fruit juice without pulp. Prepare foods with as little fat as possible.