Hello! As I said to another new member the other day, I've only been a TPS for about 3 weeks and I already have some great stories. It's truly unlike any job I've done before, and I'm having a great time. Good luck in AP.
As for orientation, mine only took about three hours. It was a standard orientation that all team members have. We watched some videos, learned about policy, filled out some paperwork, and did a store tour. You will meet some of your store leaders and learn about Target policy. Unless your orientation is in some way completely different then mine, it shouldn't take seven hours. Although, as you will learn, all stores are not the same, so your experience could be completely different than mine.
Anyways, good luck!