In the "Did You Evah" sequence the boys walk out of the library, wait a few beats and come marching back in to the bar. When Connor picks up the champagne, it still has the cork in place. But Connor immediately pours, without removing the cork/ the cork has magically disappeared.
When George approaches the Lord's mansion, Dexter hides Tracy's shoes under a round green pillow on the sofa on the patio. There are 2 green and white striped pillows resting on the left side arm. The next morning when Uncle Willie approaches the patio, the striped pillows are separated, one each on the left and right arms and the round pillow is leaning on the solitary pillow on left arm.
When George is mixing drinks for everyone on the patio, Liz places her camera on the edge of the bar cart with the lens pointing downward. In the immediate shot, the lens is pointing upward just before Tracy knocks it over and exposes the roll of film.
When Tracy Samantha Lord is driving with Mike Connor; she stops the car just past the gate to her Uncle Willie's estate. However, the foliage in the background near the rear of the car is different than the foliage shown in the next cut when they are sitting in the car and looking at Uncle Willie's mansion.
When Mike is talking to an inebriated Tracy; she removes one of her bracelets and then her earrings. She then discontinues taking her jewelry off and continues to wear the engagement ring along with one bracelet. However, in the following shot when they are dancing, she is now not wearing the ring or the bracelet.
When Liz is taking photos inside the house she points her light meter toward the things she is photographing but she is using an incident light meter. With those you hold it by the subject and point it at the camera. It measures the light falling on the subject, not the light reflected by it.
At the film's beginning, Armstrong and the band perform High Society on the bus. You hear the sound of a Latin percussion instrument called Timbales however the instrument is not being played by any of the musicians nor is it visible.
At the end of the High Society song, the band harmonizes while doing chord-holding accents. However, the bass player stops playing although you hear his instrument's sound.
When George takes Tracy, who's obviously had too much to drink, into the blue walled room during the party to lie down on the couch, before she gets there, a boom mic is visible at the top of the screen.
Boom barely drops into the top of the frame for a split second, but the shadow clearly travels across the wall when George takes Tracy into the conservatory to lie down after she drunkenly sings that she's "Sensational".
Boom shadow visible against the bookshelf to the left as Dexter and Mike Connor leave the library singing the lyrics "swellegant, elegant"
During the singing of "Did You Evah" by Dexter and Mike in the bar in the library, they pick up the wrong champagne glasses after Dexter has topped them up.