Skepticalmother

I am the Mother of a trumpet player. His high school marching band is nationally recognized and he is a senior now and has been the lead trumpet there since his sophomore year. Everyone tells me hes very talented. But now he wants to march drumcorps. I let him tryout for the Phantom Regiment just so he'd stop bugging me, thinking he wouldnt make it. But he made the second round of callbacks and was apparently ranked pretty well. Nonetheless, I didnt let him go back because in my opinion, marching this summer would be a waste of money and it would distract him from getting ready for his first year of college. As you might know, the cadets are looking for a trumpet for 2013 and he, his teacher, his band director, and the guard instructor at his school have all been nagging me to let him go to their camp because they think he has a very good chance of making it. What would you say to convince a parent in my position to fly him out to new jersey and let him march with the cadets this summer? pr What would you say to convince a parent in this position to let him march in the future?