After they arrive at the birthday party, Milly hands Woodrow a bottle, the camera cuts, and she hands him the bottle again.
Woodrow and Aiden are sitting on the park bench, the Medusa behind them. The "MEDUSA" painted on the side of the car is a different type style than in every other scene.
Woodrow and Milly trade in his car for a motorcycle while on their road trip. In the next shot of them driving after the trade, they are once again in the car. By the time they arrive back in California, they are back driving the motorcycle.
At the bar, Woodrow and Milly enter a cricket-eating contest and live crickets are shown. Yet later, characters keep talking about eating grasshoppers. This could be a slip of the tongue by the characters who do regard crickets and grasshoppers as the same type of bug.
At the end of the birthday party, as Courtney sits next to Mike on the steps you can see the microphone power supply/transmitter and a red LED on it through her blouse on her back.