*acceptI fully understand that not doing a sport will significantly hurt my chances, and I except that.
Grammar, very important in your essays to your MOC and academies. Note of advice, most of the members here (me EXcluded) are alumni, parents of cadets, current cadets, AD, etc, you would be very wise to take their advice and do a sport. From what I know marching band isn't a full-year commitment (usually just in the Fall, maybe different for your school), if you have time you should do a sport in the winter/spring. Just my 10 cents.