Parties, especially classroom celebrations, seem to have died down in recent years. This might be because we are becoming politically correct about who and what and when to celebrate. Or it might be because of food allergies.
Let’s say that a child has not picked up the redirection instructions, or has behaved inappropriately in some other way. In this case, the punishment should fit the crime AND be reasonable. Children, especially young children, make no connection between action A and consequence B if they are unrelated. For example, forgetting homework and missing recess. Homework and recess are unconnected. The child might suffer some momentary discomfort because of missing a preferred activity, but might not understand fully that the homework caused the punishment.
As we enter a new school year, state tests are pretty far away. But it doesn’t hurt to do your homework now and get prepared for the spring.