If you can’t see too much difference, then they did a good job! Assuming there was a good new car prep (not a given since most preps—-even high end ones like Porsche, Bentley, Land Rover, etc) have evidence of buffer trails, then the wrap should seal in almost all of the pristine paint goodness. The standard way is to examine is moving a high intensity focal light across the paint and inspecting for tiny swirls. With any luck, yours should look like a fairly accurate, mirrored reflection of the light without surrounding halos. The coating, as mentioned before, will become most apparent when the car gets wet—the hydrophobic properties should be pretty impressive. I personally have never had the patience to coat my wheels and calipers since I don’t have a lift and can’t stomach pulling each corner off on at a time, removing the iron, and then coating once or twice. Perhaps next time I pull off all the wheels to exchange for winter tires I’ll do it (but it’s so cold in the winter...). I bet it’s awesome for preventing brake dust accumulation. Probably much less benefit if you have ceramic brakes.
Now go enjoy your car!
Thanks,
Brian