Corrected entry: Chow emails Alan to meet him at a bus stop in Tijuana. That's all the email says and they manage to get to the right bus stop. It would seem rather unlikely they would just happen to get the exact bus stop Chow was going to given the fact that there would have been loads of bus stops in Tijuana anyway. (00:27:30 - 00:29:55)
Corrected entry: At Alan's dad's funeral, when Alan takes a picture of himself in front of his dad's portrait with his camera phone, the phone's camera is facing away from him. This is corroborated further when he takes a picture later in the film with the same phone of Phil climbing down to the balcony of Chow's suite at Caesar's Palace. The phone's camera is now correctly facing towards Phil. (00:09:25 - 01:10:15)
Correction: A good number of phones have dual cameras, where you can switch back and forth from a front facing camera to a rear facing one so that you can always see the screen. One for self pictures, such as when he take a picture of himself posing with his father's picture, and one for taking a picture of Stu on the balcony.
Corrected entry: When Stu is in the drug store getting Demerol, he has a blue shirt on. When he gets back in the mini van, he has on a pink shirt.
Correction: It's pink the whole time.
Correction: Phil announces that the email tells Alan to meet Chow at a bus stop in Tijuana, but he does not read out the entire email word for word. The email could have also contained more specific directions which he simply did not bother to read out at that point.