Ya know, I have to say, I was disappointed when I didn't get the direct hire with Apple (although having gone through the Kelly training now and seeing where our emphasis is placed has really helped me pinpoint the deficiencies that they saw in me) but I'm really not hating it at all. Everyone is super-supportive of each other and in a way that isn't totally obnoxious cheerleader. I've been rather pleasantly surprised. I do still plan to try and reapply after my six month waiting period is up but I'm glad to find that I won't be hating my time with Kelly while that happens.
If Kelly paid nearly as well as Apple and had even semi-decent benefits I might actually be content enough to stay. But since they don't, I have to do what I can to try and get into the best possible situation.
I guess all I'm trying to say is, if you don't make the cut with Apple, don't be bitter about it. Try and see what it is that they wanted to see and didn't and do what you can to improve your skills in the areas they're lacking. And whether you get hired with Apple or Kelly, be prepared to have to think on your feet, rather than expect them to give you the time to memorize every possible scenario. Practice by making sure your questions haven't already been answered.
Oh, and know the difference between apologizing and empathy. Apple doesn't want you to be sorry, they want you to be understanding and able to demonstrate that you understand. Master that, and you'll be in great shape.