Is it just to convince the appointees to accept the appointments?
Many above have mentioned the many positives of orientation and summer seminar. But realize; the academy doesn't have to convince ANYONE of accepting appointments. With approximately 10,000 applicants; they will always have more than enough people to fill the slots. And the vast majority of applicants; with or without an appointment; meet the requirements to get in. So, whether you accept the appointment or not, is not of importance to the academy.
What is important, is that they don't WASTE your time, their time, or their money; training you and having you drop out after 1 semester. The biggest reason that individuals have problems with/at the academy, is because of stress. Many times, that stress is simply because: "THEY DIDN'T KNOW WHAT THEY WERE GETTING INTO". More than half of those with appointments and attending orientation, did NOT go to summer seminar. This will be the first time they've even seen the academy, colorado, or the military environment. Same with parents. Many students get stressed out because their parents are stressed out. When my son went to Summer Seminar, and they had their "Doolie for a day" and the cadets started ragging on the attendies; one noticed that my son didn't have that glazed over look that many have when in a new environment. And they simply asked if any of this environment bother my son. He simply said no; you've never met my dad. And that he was use to this environment. He'd been around it for 18 years.
So the whole purpose of summer seminar and orientation is to make the applicants and their families aware of what they are getting into. They will definitely talk all about the good things and advantages of the air force academy. But they will also talk about the negatives. They want you to choose what is right for you. If you change your mind; no problem. They can get a replacement. But they'd rather you choose your mind in April; than to do it after the first semester. Also, they explain all the financial issues and other concerns that parents have.
All schools have orientation, and the academy is no different. But it's definitely not to convince you to accept the appointment. It's to make sure you know what you're getting into. At least as much as possible in that position. This way neither you nor they waste time, energy, or money on something you might not really want. Best of luck. mike....