As C4llyT says the bodyshop finishes are most of the time to a very poor standard that will leave hologramming in the finish, you will not really notice it unless its under halogen lights or in very strong sunlight. It is very easy to get the holograms out though.

Best thing would be get someone who knows what they are doing to machine polish after with a light cutting polish or finishing polish once you get the car back, this will enhance the gloss and the finish to your car.