Continuity mistake: When the balcony collapses, the man that was eating chicken disappears in the wide angle.
Suggested correction: You can see him falling with the balcony. Pay attention to his brown sweater and you can see it falling and crashing to the ground with the balcony. How it was done...maybe a dummy?
Character mistake: Remy is Sam's daughter despite that they look the same age.
Suggested correction: This would be trivia at best. Characters are often older or younger than the actors portraying them. Greene being less than 8 years older than Gardner in real life isn't a mistake.