Wedding Food & Drink: Meeting Wedding Guests' Dietary Needs?

Is it necessary to take all 200 wedding guests' individual diets into consideration when planning the wedding reception menu? It is totally overwhelming to think about serving a meal that meets the needs of those who are vegetarians, diabetics, have food allergies, keep Kosher, are on Atkins or South Beach, and the just-don't-like-exotic-food types. It is so much simpler (not to mention cheaper) to have one wedding reception menu, but I don't want anyone to starve because they can't eat pork, for example.