You are wise to think ahead. I don't know if they will talk to you unless you bring a parent with you. You are young, but since you are thinking about this, I want to remind you that recruiters are sales people. They are trained to tell you what you want to hear, to a degree. As an example, when my brother enlisted in the Navy, his test scores were one or two points too low to get into computers. They told him, "don't worry about that, they will waive it when you get to Florida." So he went in under some general category -with no promised position at all. He spent two years scraping paint and stuff like that. So, you need to be careful. Even if you have a promised position, things can change,
All of that being said, the military gives you a great chance for top notch training, along with formal education, plus travel. It instills a sense of leadership that is lacking in many young people. Unless you make it a career, it's only for a few years.
I recommend you call the recruiter and see what their policy is about talking to people your age. You never know unless you try!