Is your son good enough friends with any of the other regional qualifiers to stay with them? Regardless of all the concerns about misconduct (which I do take seriously), I just think that's a lot of pressure to be with a non-family authority figure 24-7 for the entire time he's out there. I don't know about your guy, but my guy works VERY hard to be on his best behavior when he is with his coach. He never lets his hair down, so to speak. That's fine for a practice, a meet, or even a very long couple of days of clinic, but he needs a little time to unwind and step off the stage, so to speak. Seriously, he would worry about whether his coach was critical of the way he brushes his teeth. For your guy, depending on his maturity and whether he has more trouble focusing with the fam around, I could see letting him go solo, but I think it is very important for him to have some down time when he's not expected -- or expecting himself -- to be on his absolute best behavior.