Other mistake: In the scene of the wedding rehearsal dinner, when everyone is toasting, there are people outside the restaurant's door just standing there looking at how the scene is being shot.
Other mistake: In the end credits, the pseudo-newspaper text surrounding James Marsden reads "The best man was Kevin Doyle's long-time friend and colleague, Trent, who has [James Marsden] The best man was Kevin Doyle's long-time friend and colleague, Trent, who has recently taken over." The part before the actor's name is repeated immediately after.
Other mistake: When the camera pans down from the sphinx there are two flames. You can clearly see that it is a reversed shot by the way they move. (01:15:35)