Parts of the film were filmed at Leeds Festival 2017 with actual festival goers being used as extras in the large crowd scenes.
Joe Thomas (Nick) and Hannah Tointon (Caitlin) are engaged and have been in a relationship since 2010.
Some of the film was filmed in Keynsham and Clifton in Bristol, United Kingdom.
The spicy wing competition took place in Atomic Burger in Oxford (Cowley Road) and is referred to as the Fallout challenge
Joe Thomas and Hannah Tointon previously starred together in The Inbetweeners.