My son is 12 and an only child. He loves camp, he tells me it's the only time he can be surrounded by boys and do boy things like sports, swimming, yelling, running around. Boy this kid loves camp. It is not cheap but the letters home are great!
He does overnight camp for two weeks. All mom and dad can stand, we miss him. Please they do not sleep at overnight camp, having too much fun talking...
Then day camp the rest of summer because mom works and no way will he hang out at home. He loves the YMCA camp, and yes they do make sure they wash hands, keep food/drink clean and cold etc.
I send him with body wash, and he knows mom's a nurse so he washes after the bathroom.
I never went to camp, no money, we drove my mom nuts :)