If it were me, I would want to be the first to open it.
That being said, whenever I buy something for my kids I normally check it out, charge it up and make sure that it works. I tell my wife, "Can you imagine the look of disappointment on young Junior's face if his new toy doesn't work on Christmas morning?" I'm not fooling her. She knows that I just want to play with the toy myself.
I still would like to know how to do a transfer however. I've seen the question come up several times, but not sure if we ever got a good answer. How does it work when you buy a used P3?