So we are doing a buffet dinner at approx 7pm.. Soup, salad, two meats, mashed potato bar, mixed veg, assorted breads. With 150-200 guests we anticipate dinner taking close to an hour. We will cut the cake at approx 8pm (or whenever dinner is done) - not sure how long it will take for it to be sliced and served. We were thinking of doing a late night snack around 10... Is that just too much food in a short amount of time??