Continuity mistake: When Frankie and Lizzie meet the Stranger on the docks Sunday at 1:00pm, it is quite overcast when the Stranger asks Frankie, "Right. You choose, where do you want to go?" The shot immediately moves to a hillside overlooking the docks and the skies are almost completely clear and blue. We know a narrow window of time has passed based on information on what transpires before and after this scene.
Continuity mistake: When the group is seated at a table and having drinks at the back of the Dance Hall, they toast each other (note Ally's hand on Marie's shoulder during the entire scene). Then when Marie makes her inappropriately familiar quip about the Strangers cigarettes, Ally's hand is still on her shoulder. Yet when the Master of Ceremony, who is Ally, is at center stage to introduce "Lizzie's Song". Ally appears to be in two places at once.