When Sharon receives a distressing phone call from Scott, there is a zoom in on her best friend Kelly. This shot is flipped: her hair is parted on the wrong side.
At the wedding ceremony, the bride and groom are reversed. The bride is always on the left as seen from the crowd, or on the right as seen from the preacher's perspective.
When Marie Windsor's character Gloria sings "Oh Promise Me" during the wedding, the keyboardist is playing a Fender Rhodes electric piano but the sound heard is that of an acoustic piano.
Two scenes set at different airports are filmed on the same set. First, Claudia arrives in Los Angeles and walks to a phone bank. Scene is filmed showcasing only the two left telephones. Later we see Kris at the 'Denver' airport using the phone furthest right of the four phones we saw in ' L.A.'. Only this time, there is a poster on the wall that reads 'Fast Flyers to Downtown Denver'. The water fountain that was against the wall in L.A. has been removed and replaced with an aluminum ashtray/trash can canister below the Denver poster.
When Kelly notices Tiffany has left her place in the orchestra, the piano player moves like he is playing music even though there is none. A little later, Claudia also notices Tiff is gone and the same shot is used. This second time, the piano player is indeed playing music to accompany Mrs. Kellerman's singing.
During the wedding scene the bride and groom are standing opposite of tradition. The groom is in the left of altar and the bride on the right. Normally, it's the opposite.
Twice an atmosphere player appears to be in distress. She is the blonde extra playing one the bridesmaids, screen-left of Claudia. The first time happens after Claudia departs. As the camera focuses on the bridesmaids, that lady's head suddenly quivers, as if she were in medical distress, and she could no longer stand still. The camera promptly cuts away. It then happens again when there's another close-up on them, showcasing Claudia's absence.
Their characters were best friends in high school, but Jaclyn Smith is 11 years older than Kim Cattrall
When Randy is talking to Kelly, in high definition TVs, it is evident that he is wearing bright fuchsia lipstick - albeit lightly applied on his lips - and other "womanly" make up on his eyes and cheeks. (This is for the actor and lighting, not for the character.)
The bit-too-enthusiastic keyboardist behind violinist Tiffany is seen dancing on his seat (moving his shoulders) way faster than the violins are playing.