The Elder Allen character background is loosely based on Richard DutcherRichard Dutcher's own life.
Factual errors: In real life, Elder Dalton would have been sent home from his mission when he had brain cancer. No missionary is ever allowed to stay in the field "just because he wants to," particularly in life-or-death matters of health like that.
Factual errors: The black name tags lacked the "The" in "The Church of Jesus Christ of Latter-day Saints."
Incorrectly regarded as a goof: Elder Sandoval is seen playing a guitar. Musical instruments are allowed on Mormon missions, though many forgo them, preferring to travel light.