http://www.usmma.edu/admissions/PDFs/Catalog3.pdf
Reading page 3 of the KP catalog is probably the easiest way to explain. Yep, you can go to flight school. You can even become a doctor if you want.
Right now, there are kids out there working on seeing more than a dozen countries while learning how to drive every type of vessel that floats on the water. Some of them will not end up on ships after they graduate. They'll fly, they'll go to work for NOAA, some might make the cut to commission directly to Intell, some will go into law. The possiblities being a KP grad are broad.
The chances of you getting you first choice? It is what you make it. Life isn't easy at KP. Sea Year can be lonely, academics can kick your butt, but if you end up in the top 20% of your class, I'd venture to say you can have the world. Its hard to predict this question. And this is why..... The more education you receive at KP, the more your eyes get opened to your options. One kid went in saying nothing but FLY NAVY FLY NAVY & ended up sailing. Another went in wanting to be a Naval Officer & three weeks before graduating, he jumped ship & went Army in logistics. His parent's kinda flipped. Had to throw away all their NAVY t-shirts. I recall hearing CG CG CG from my kid for three years. I now hear something about Navy out of the corner of his mouth.
The long & short of it is, if you consider KP, you're gonna have alot of choices to choose from. It just doesn't occur to applicants this early in the game that they don't have to settle on one thing & set it in stone. Do your research & try to get hooked up with a KP kid to ask questions. You'll get alot of insight there.
Good luck with all the applications!