In several cuts we can see from the ocean that Amber is going south, rather than north toward her father. Then she has suddenly switched direction.
During the poker game, most shots Hank is wearing sunglasses, but in one shot (from behind) he is wearing regular glasses. Later he changes from sunglasses to regular glasses.
When Seth called Sarah, you can see Sarah tried to reach her phone before you hear the phone ring. Also the screen on her phone was off.