This is OP. He says that he is a bit worried, but he also wants to try it because it sounds like fun. He knows what he will get into, like those sleepaway camps are cabin (not tent), air conditioning or fan or nothing, food will be served, there's bugs or bees, there's shower/bathroom, may sleep in bunk bed (he insists to sleep on bottom) or a room of a few or many boys, and counselors will be there, sing songs around fire etc.. Daytime maybe hiking, water activities, fishing, craft, games, sports, or build camp fire etc. He is kind of looking forward to what I have described above, and we look at those websites description/pictures together. I have given a thought of 3 day weekend sleepaway camp, but I think it is better to start with 1 week. I think he can do it, and I think he would love it once he experiences it. He cried at the last day of each summer camp because he had so much fun and he missed it.
Anyways, I tell him that we will wait for an extra year to talk about sleepaway camp. I will sign him up with some different summer day camps this year to try more new activities. He is the kind that if I don't give him a push, he will stay at his comfort zone forever because he is worried this and that. The main reason for sleepaway camp is I want him to learn independence to take care of himself.