The song played by the quartet in the background of the wedding is "Home" by Edward Sharpe & The Magnetic Zeros.
Australian pop band, Asian Envy, were originally cast as the wedding musicians in this episode until a contractual dispute meant they had to back out, resulting in script adjustments to combat the change.
Crispin is the only of Pepper's friends not invited to the wedding.
Both Elizabeth Banks and Adam Devine have starred in the movies Pitch Perfect (2012) and Pitch Perfect 2 (2015).
Celia Weston and Adam DeVine have both starred in the movie 'The Intern' (2015).