Mix 2 cups milk and 1 package pudding together and whisk well. Refrigerate for at least five minutes (the longer the better so do this step first).
Drain the juice from the oranges, pineapple tidbits and crushed pineapple into a large saucepan and set the fruit aside.
Add 2 cups water to the juice saucepan.
Bring pan to a boil and stir in Acini di Pepe pasta, heat according to package directions for about 10 - 12 minutes.
When pasta is done, drain excess liquid and rinse pasta with cold water.
Add oranges, pineapple and pasta to a large mixing bowl.
Stir in pudding and thawed whipped topping.
Fold in mini marshmallows.
Refrigerate for at least 4 hours before serving to allow mixture to thicken.
Yields 12 Cups