Continuity mistake: Just after the hit man kills Bernie he proceeds to disguise himself and pulls a folded, floppy beach hat out of his pocket. Yet when we see him getting on the boat in the next scene the same folded hat is now a perfectly round, structured hat with a brim.
Suggested correction: It's the same hat. That's the style, where it can be folded and open back up. Similar to a bucket hat.
Continuity mistake: When Gwen is with Richard and sees Bernie and wants to go thank him, the various people standing behind them change when Richard yells "no!"
Suggested correction: Incorrect, the camera is simply in a different place before and after the scream. Before Richard yells "no" there are two men, one in a black shirt, the other in white, near the left of the screen behind Richard and Gwen. These men can be seen after the scream, but on the right side of the screen. If the camera were to pan another 30° to the right you would see all the same people.
The camera isn't in a different location as the pool is in the same spot. But, there's a lot more than just 2 people who change, for example, before the scream there's about half a dozen people by the pool next to a guy in yellowish pants and black coat, but after those people are all gone and it's the man in black coat and 1 different woman.
Revealing mistake: When Larry, Richard, and Gwen are running from the hitman, they run over to the glass doors and say, "It's locked." If you look at the glass, you can see the outside decking area, which appears to be a print of the outside on the glass itself. (01:24:42)
Suggested correction: If you look at the shoreline as they're at the door, you can see the movement of the waves, so it can't be a picture.
