My first business trip

My first business trip

I am going to Illinois on a business trip from tomorrow.
I`m excited and nervous because this is my first business trip.
Do I need to be at the airport an hour before the flight time in U.S?
I want to believe this experience will make me grow up.

Aとtheの使い方は難しいと思います。　それを身に着けることができたら、英語の半ば位は征服したようです。　とは私の個人的意見なんですけど。