Goofs

While in the drug store, Hermie's ice cream cone switches from 3 scoops to 2 scoops and back to 3.

When Dorothy is drinking coffee with Hermie in their introductory scene, she holds the cup in her right hand, with her left hand elevating the saucer under it (British formal tea style). However, the reverse angle shows her holding the cup with both hands, and the saucer has vanished.

The interior scenes of Hermie's house show two stories, including Hermie's bedroom, but the location house used for exteriors has only one story, with just room enough for an attic.

The boys, the "terrible trio", are walking along the beach after Hermie's first encounter with Dorothy. Her house is in the background. After a while, the scene cuts, and they are back where they started.

When Hermie goes to Dorothy's house at night all the lights are on. At that stage in the war houses on the beach would be required to have blackout curtains so as not to silhouette ships for submarines to see them.

The final scene shows the sun setting (or rising) on the ocean as waves roll onto the beach. On closer inspection though, the film is playing backwards, and the waves are heading out to sea.

While waiting outside the drugstore, Hermie's breath can be seen, although it's supposed to be the middle of summer.

After Hermie gets the ice cream cone from the druggist, they converse for some time, yet the ice cream doesn't melt despite it being summer.

When Dorothy drops her bags of groceries a box of Rice Krispies falls to the ground. This is a more "modern" box (1972) with bright colors and a small white Rice Krispies panel The 1942 box had muted colors and a large panel with the cereal's name.

A modern bridge and vehicles can be seen outside the drugstore window near the greeting cards rack. The bridge also is seen when Hermie and Oscy are conversing outside the drugstore.

When Dorothy drops her grocery bags in front of the store, a 1970s blue Rice Krispies box is among the items that fall out. In 1942 Rice Krispies were packaged in a white box.

Hermie, Oscy, and the girls go to the movies and see Now, Voyager (1942), which was not released until the end of October 1942.

A 1970s gas station sign is visible in the background (albeit with the logo covered up) when Dorothy is waving goodbye to her husband from the dock.

When the terrible trio is at the movies trying to pick up the girls, they agree to dutch treat but the girls demand a fifteen cent candy each. In 1942, candy bars typically cost around a nickel.