Be ready and confident and you wont have any problems.
The Technical is there, they are just laid back. I am not sure how they grade, could be misleading. Don't forget about the HR standard questions.
I have not received the call or the Fed Ex letter, only been a week so keep in mind that I could be way off.
I do know that you will have fun and they will make it a good experience.
Stay at the recommended hotel and talk to some line Capt, they are all over. You will get a good feeling of the climate and that people that are there are happy. There will always be the grumpy ones but all in all I was impressed.