Fred, Barney, Wilma and Betty are walking home after the bowling game but Fred and Barney had driven there.
The phone at the dance studio has a regular shaped receiver but other phones have a long curved cone-shaped shell for the receivers.
Fred's black ballet suit is smooth the first time he is shown wearing it but it has little hairs sticking out in subsequent shots.
In the new intro song Fred is shown clocking out of "The Rockland & Quarry Construction Co." but in the show he works for "The Bedrock Gravel Co.".