I have a nerdy intellectual socially awkward type at an alleged party school (UW Madison). He did live in an LLC freshman year. He joined clubs. He has 2 rigorous majors and has social connections in both those groups. He is 22 and still does not drink ever. Zero reason to lie or hide. Spouse and I drink and offer it. His roommates do drink.
I’d let him live where he wants if he has been trustworthy and doesn’t have known substance issues. Maybe an llc in an interest area might work better. I don’t think substance free necessarily means more substance free than other parts of campus either.
Anyway, every decent sized campus will have a mix of people. I’d encourage him to find his people. The students that don’t figure out the school part of college don’t last that long.