In the scene by the lake, you can see that Star is wearing a Deathly Hallows pin on the left side of her collar.
During the credits the 2 main characters, Star and Brandon Walker, are in the RV pretending to do foreign accents. Both actors were actually doing American accents in the film since Tammin Sursok was born in Johannesburg, South Africa, and Tom Felton was born in Epsom, Surrey, England, UK.
This movie was shot across Oklahoma. There's a scene in the movie with a blue whale which is located in Catoosa, Oklahoma just northeast of Tulsa.
J.T. says his initials stand for "Jesus Todd" because every time he messed up as a kid, someone would yell, "Jesus Todd" at him.
The amusement park that Star talks Brandon into stopping at is Frontier City Amusement Park in Oklahoma City.