Just remember it's all business. Don't take what they say to heart and just comply with whatever they tell you to do. Even if it's a trap, and if they ask you WHY you did it, just tell them "Because Drill Sgt told me to!" Seriously. I was AD for six years. I know almost every trick in the book. They break you down to mold you into what they need.
You'll live and you won't regret it. I miss the MIL.
The MIL was the best damn decision I've ever made in life and it's one of the most respected jobs in the country.