Camping pet peeve

Not so much a pet peeve after I understood the situation. We were camping and sitting out under our awning. Our kids were younger and out on their bikes. So here we sit and this boy who was around 10 years old walked up to our site which we thought he was going to walk through our site but no he proceeded to walk up to our door and open it to go inside our TT. :? When I stopped him and ask what he was doing, was he lost?? He told us that his mom said if he needed anything to stop at a campsite and they would help so he told us he was thirsty and was going to get something to drink. We went to find his parents and let them know, for one I was concerned about a child going into another persons camper. Mom informed us he had a condition (dont remember) that caused him to get lost and confused with surroundings so he was instructed to go to a camper and ask for help. She apologized and said they needed to "fine" tune the instructions. No harm done but like I said when it first happened I was like "What the heck!!!!"