Cut/slice fruit like bananas and apples last and top with lemon juice right after to prevent oxidation (turning brown).
Let Italian Fruit Salad sit in the fridge for 20-30 minutes before serving. During this time lemon juice will macerate the fruit letting it release some of its juices, creating a delicious sweet and sour sauce.
Add a splash of Limoncello for a little booze and extra lemon flavor.