Rinse the maraschino cherries in a mesh strainer or colander under cold running water. Lay them out on a few layers of paper towels and pat dry without squishing them. Cut in half and place in a large mixing bowl.
Add the pineapple, orange segments, apple, grapes, and coconut to the bowl with the cherries and mix to combine.
Combine the heavy cream, sour cream, powdered sugar, lemon juice, and salt in the bowl of a standing mixer with the whisk attachment. Mix on medium-high speed until soft peaks form, 3-4 minutes.
Pour the cream mixture over the fruit, add the marshmallows, then fold everything together with a rubber spatula. Cover the bowl with plastic wrap and refrigerate for 1 hour before serving.