When Tammy starts working at Vogue, when she passes by the seating chart for the Met Gala, the spot next to Daphne Kluger isn't empty. In the next shot, when discussing Daphne Kluger's date while looking at the seating chart, the space next to Daphne Kluger is empty.
When inside the van all the girls are lined up seated next to each other alongside the side of the van, indicating that is long. When they arrive and exit it however, it is a short wheelbase model, and it is unlikely they could have all been seated in such a way inside it.
When Amita is introduced she is grading diamonds. Shortly after she uses a Jeweler's loupe to look out the window at Debbie who is at least across the street. A jeweler's loupe has a focal range of between 1.5" and 10". Anything beyond 10" would be blurry beyond recognition.
Debbie is supposed to be the one who came up with a complete plan, but Tammy is explaining her how to make a zirconium replica of a diamond necklace. If Debbie did not know that, she wouldn't be able to come up with the plan as this is a crucial part of the job.
In the final scene showing Lou filling her motorcycle before cutting to the Great Ocean Rd, the pumps show "Unleaded Gasoline". In Australia, it's referred to as Petrol, not Gasoline. However, since a car at the gas station has a California plate, and she drives her motorcycle on the right side of the road, we can infer the scene is supposed to take place in the US.