In the begining, when Janet & Chrissy were holding Jack's stuff for the party, a potato chip bag fell (actually, Janet pushed it off) and then it wasn't in the box anymore. Then Janet and Chrissy walk toward the kitchen and the potato chip bag still isn't in the box. Finally, Janet and Chrissy go into the kitchen and the potato chip bag in back in the box!
Mrs. Roper has the same suitcase as Chrissy (the blue one). Just something I noticed.
When Mr. Roper says something like, "He misses him (meaning the parakeet)", the parakeet whistles. Listen closely, you can hear someone whistle before the bird. If the bird did whistle, could it be the trainer of the bird? Or if it was just sound affects, did someone press the "whistle" button too quickly?