Full-time LDS Missionaries wear standard-issue black name tags that clip onto front pockets, not (as shown) pin-on name tags. Further, although "casting (or shaking) the dust from your feet" is Biblical in origin, LDS Missionaries are neither taught nor directed to do this to anyone.
When Barb is calling about Nicki's credit card, she has a list with the family's details including names, birthdays, social security numbers, and cell numbers. The list has many errors: Nicki and Margene's surnames should be Grant and Heffman, not Henrickson; Sarah's name is listed as Amanda - the name of the actress that plays Sarah. The birthdays are of the actors who play them (except for Barb who's year of birth is wrong for both the actress and the character), and most of the dates are wrong for especially the younger characters like Sarah and her full brother Ben being born about 6 months apart.