Bring a large pot of salted water to a boil. Cook the 16 oz of spaghetti according to package instructions until al dente. Drain, reserving 1/4 cup of pasta water.
Toss the warm spaghetti with 1 cup of pesto sauce. Add a splash of pasta water if needed to thin the sauce. Set aside in a large serving bowl.
In a separate serving dish, gently combine the 2 cups of halved cherry tomatoes, 8 oz of mozzarella balls, and 1/2 cup of torn fresh basil.
Preheat the oven to 350°F (175°C). Place the 8 mini flatbreads on a baking sheet and warm for 5 minutes.
Arrange the pesto pasta, tomato-mozzarella salad, warmed flatbreads, and 1 cup of green olives on a large table or grazing board.
Garnish the board and prepare a pitcher of ice water utilizing the sliced lemon, sliced orange, and 1/4 cup of fresh mint leaves. Sprinkle the meal with 1 tsp of kosher salt to taste before serving.