We have had first hand experience with a camp that was truly invite only with cap of 24 players. They did not send out an email but made a call. They have to list the camp but did not advertise or send out emails. This allowed them to get the 24 they wanted to attend. Even in that type of situation, the HC was honest and informed players/parents that maybe 1-2 would end up receiving an offer. On flip side, my son has received numerous college camp invites that were obviously sent out as part of mass email campaign and some that sounded similar to UNC camp invite. As 3and2 stated, it sounds like a great camp and if your son performs well, it might lead to something more.