summer camps for kids?

My father has offered to help send the boyz to a summer camp.

I've never had to research something like this before, so I have some questions.

I'm sure we would do a day camp for my 5 year old. He's your typical 5 year old. What are your experiences? which ones worked for your child?

Finding a camp for my nine year old is a bit more challanging. He has Adhd, language processing issues and is starting to get anxeity. He has low social skills and dislikes school work and anything else that poses a challange.
Is there a camp out there that would fit his needs? An overnight camp would be fine because we go camping as a family so he is used to that.
thank you