The model of Reece's camera constantly changes throughout the film.
The bike that is brought to the beach by James constantly changes between a BMX and a mountain bike.
When Reece and Shannon leave the campsite to head down to the beach, Reece is carrying bags. When he arrives at the beach, he is also carrying a blue sleeping bag and a red cushion.
In the flashback at the end, when the girl knocks the pencil case off the table only the lid falls onto the floor. Yet when we cut to the wide shot, both the lid and the case are on the floor.
When Reece, Shannon, Charlotte, Matt, Mike and Abigail are sat under the tree arguing over the cause of their upset stomachs, a crew shadow can be seen moving in the bottom right hand corner of the screen.