Not sure about the rules etc. in your area, but I was 15 when I took my first long tour 50 years ago. During that time, young people had to have chaperons or parental guidance for darn near everything. My buddy and I stealth camped (it was great fun being sneaky) and had a great time, even though many adults were nosy about us as we entered new communities along the way. Have a great experience, just don't do anything outrageous to draw attention to yourselves.