When Corey and Clay get in his truck Corey puts his seat belt on twice.
The first time the refrigerator in Corey's hotel room is shown, it's old and has a spot in the top right corner where something looks scratched out. Later the refrigerator is newer and has a "Do Not Drill" sign in the upper right corner.
In the credits it shows Okmulgee Memorial Hostpital instead of Hospital.
The back of Cory's baseball card reveals that his character was born and currently resides in Venezuela.