My boys (13 and 15) are going to a Nike Tennis Camp this summer...would appreciate any advice from our younger members who've gone to a Nike or other tennis camp recently, or parents who's kids have gone. If it was a Nike camp, bonus points for info on your comments! Looking for things like "I never would have thought of bringing X along with me, but I was really glad I did." or "Here's how I got the most out of camp..." or whatever "aha's" you may have experienced. Thanks.