Sophie Thatcher and Chloe East were both raised Mormon and were able to give valuable insight into the religion when shooting the movie. They are no longer Mormon.
Hugh Grant once stated in an interview, "I'm getting bored of playing obvious roles and being typecast." Writer/directors Scott Beck and Bryan Woods saw this interview and wrote the character of Mr. Reed with Hugh as their top choice for the role.
Hugh Grant improvised the moment when he meows in reference to what his favorite monopoly piece is which caused Sophie Thatcher and Chloe East to laugh during the take.
In order to keep Sophie Thatcher and Chloe East on their toes and engaged in the scene Hugh Grant would improvise and change lines like the moment Mr Reed mispronounced Angel Moroni's name which caused Chloe East to improvise correct him.
Persuading Hugh Grant to take on the role of Mr Reed took around four months with the actor emailing directors Scott Beck and Bryan Woods back and forth with questions about his character.