Throughout the movie it can be seen that it takes place in Canada: Canadian beer, Blue Jays poster in the background at the bar, British Columbia license plates on the cars and yet when the money is found in the decorative pig on top of the diner, the money is American.
When we first see Eve go to work after seeing the pig look at her, outside she is bare-legged apart from socks. As soon as she goes through the door she has jeans on.
Katharine Hepburn's name is misspelled as "Katherine" on the theatre marquee.
The driver of the car that pauses for Linda to cross the street when she leaves the dance is visible and can clearly be seen wearing a headset.