John; scraper is correct. You are assuming that prior enlisted or prior prep are somehow all set to go with in-processing. Don't assume. Are you prior enlisted or prior preppy? If you are, you'll be in-processing just like everyone else.
Oh; also, this will come up before I day, but people might want to hear it now.
Don't come to "I-Day" trying to stand out or "Proud". Be humble. There's 1100-1200 others just like you. DON'T wear your JrROTC or CAP t-shirts. Don't wear ANYTHING Air Force or Military related. Don't wear shirts/hats that brag about you in any way. It doesn't matter how proud you are of your achievements. Considering the company you are in, it's quite arrogant to try and bring attention to yourself. And you WILL bring attention to yourself if you wear any of that.
It's june. Wear some shorts, polo or similar shirt, and a small light back-pack with an extra set of underwear and your basic toiletries. And don't forget to have a COPY of ALL PAPERWORK you have since the beginning of the process. It doesn't matter if you sent it to the academy or not. Have a copy of your transcripts; shot records; etc... EVERYTHING. Don't believe me? Ask the individual who the academy misplaced his shot records that he sent to them. He received a Shiite load of shots in that first day or too.
Anyway; this will all come up again in a few weeks. But the point is; blend in. You'll have plenty of time for the cadre and other trainees to get to know you. Don't TRY and stand out by wearing "Look at me" clothing. Especially if it's "Military Wannabe" related; like JrROTC, Civil Air Patrol, air force, etc... You'll find out quick enough that those things were impressive during the application process, but that is all over. BCT and "I-Day" is a totally different world. Best of luck. Mike.....