When we finally see inside Nick's house the master bedroom is decorated with Mrs. Halsey's 'Koi' trophies which is a very odd place for them. Since his wife has spent a small fortune on her hobby turned business, converting their swimming pool into a Koi pond and their backyard into a Koi hatchery why would she hide them in a private room like her bedroom instead of displaying them together in a public part of the house like her office, library or entrance hall where potential buyers might see the awards her successful breeding program has produced?
After Samantha offers Nick Valium for his withdrawal symptoms, the yellow kayak (which we saw Nick drag to the far side of the yard in an earlier scene) appears behind her in the vicinity of the improvised living room. The kayak has been moved there to be revealed as the location where Samantha has hidden his beer. In the morning when he awakens from his stupor the kayak is back in place near Elliot and Kitty's yard, where Nick originally dragged it.
Camera and camera operator sitting motionless are reflected for an extended length of time in the glass shower door in Nick's master bathroom (lower left of frame). Scene occurs toward the end of the film, after Nick is provided keys to new locks and regains access to his home.
In Nick's high school yearbook, Delilah's phone number included the area code. In the 1980s, no one would have used the area code, especially since the 602 area code was the only area code in Arizona until the mid nineties.