Rules about sororities PNMs might want to know

Hopefully this can become a chain with only FACTUAL rules sororities make their girls follow that might be a bit of a turnoff to a PNM. I’ll start with DG does not allow freshmen or sophomores to drink at ALL events including socials, rentals, date parties, and formal. They also don’t allow any freshman or sophomore go to CJs.

What are others from different sororities?