Jenna doesn't use proper cane technique when she enters the restaurant in the opening scene. The tip of the cane should sweep to the side opposite the foot coming forward and Jenna arcs the cane the same direction as her step.
Toward the end of the episode Aria walks out of a coffee shop with dry hair. It is raining, but she is under an awning so her hair should still be dry when she turns to step out into the rain. When the camera changes and she steps out from under the awning her hair is already wet.
At the end of the opening scene the view from the outside shows that the table the girls just got up from has been cleared, even though the table has been in partial view since the girls got up and nobody cleared it.