Errors made by characters (possibly deliberate errors by the filmmakers): Burke refers to Rocky as a parrot. Rocky is actually a cockatoo.
Continuity: When Walter (John Carroll Lynch) enters the hotel lobby and sees Burke (Aaron Eckhart), he puts the "A-OK!" lanyard on backwards, with the solid blue side facing out, and then cuts to a smiling Burke. When it cuts back to Walter, the lanyard is around his neck with the name tag side correctly facing outward.
Continuity: When he goes to release Rocky, they get out of van - headlights are off. Camera goes to close-up and then returns to the van and the lights are on.