are sororities actually banned from taking wsp pics?

Is it true that NYU sororities aren't allowed to take group pictures in WSP anymore???? I just don't understand because welcome week has literally taken over the entire main area two years in a row to film a ridiculous video (well made, yes, but seriously?? There's 100+ welcome week leaders running through the park, jumping in the fountain, etc) bu sororities aren't allowed to take one picture on bid day or after events? My friend told me that our sororities aren't even allowed to apply for permits to do so, so what's up with that?