When the family leaves for the trip to the cabin, they are riding in a 1952 model Ford. When they arrive at the cabin, their car is a 1957 model Ford.
When Ward and the boys are fishing the reflections of trees and shakiness of some shots show that these closeups were filmed in different locations.
For instance, Ward's closeups have trees reflected in the water but no trees or reflections are seen in the wide shots or the boys' closeups.
Also, the closeups of Ward have no camera shake but the other shots do.
For instance, Ward's closeups have trees reflected in the water but no trees or reflections are seen in the wide shots or the boys' closeups.
Also, the closeups of Ward have no camera shake but the other shots do.
When the boys are reeling in the fish, long scratches and sprocket marks are visible in the stock film footage used.