In a large mixing bowl, blend together the banana cream instant pudding and crushed pineapple with juice. Use a whisk to combine thoroughly until the mixture thickens, which should take about 2-3 minutes.

Gently fold in the maraschino cherries, diced strawberries, miniature marshmallows, chopped nuts, chocolate chips, and sliced bananas into the pudding mixture. Use a spatula to ensure even distribution without mashing the fruit, which should take around 2 minutes.

Carefully fold in half of the whipped topping to the mixture. Use a gentle, side-to-side motion to maintain a light texture, about 1-2 minutes. Add the remaining whipped topping and fold again, avoiding overmixing.

Cover the bowl tightly with plastic wrap or a lid, then place it in the refrigerator to chill for at least 2 hours.

Gently stir the Banana Split Fluff Salad to refresh its texture before serving. Garnish with extra chocolate chips, chopped nuts, or maraschino cherries on top.