At around the 1:11 mark, Emma (Kaley Cuoco) is clearly barefoot. When she turns and walks back into the house, she's suddenly wearing white sneakers.
In the final running gun battle in the woods, Gwen's stock changes from folded to unfolded and back to folded, before she dramatically unfolds it and adjusts the stock.
Dave asks for Diet Coke in Berlin and the German bartender only has "Coke light". He is given a fresh bottle and pours it quickly into a relatively small glass, but there is literally no fizz when the Coke is poured into the glass, or when Dave places it heavily onto the end of the bar when he joins Emma, and nor are there any bubbles when the glass is sitting on the bar... Whatever fluid is in the glass is clearly completely flat, and not from a fresh bottle of Coke in any form.