[33girl]

If the chapters have houses and they're large enough to accomodate this, do a progressive dinner. Salad at G Phi B, appetizers at the 2nd group, dinner at the 3rd and dessert at the 4th. It's always neat when you can see someone else's house because after you join they almost become "forbidden" territory.

If the houses can't accomodate everyone, then pick 5-10 (depending on house size) girls from each chapter. Get everyone's member roster and pick names out of a hat. The last thing you want is to have the 5 girls from XYZ who are up each other's butts 24/7 and don't socialize with their own sisters, let alone other sororities.

As far as the lack of discussion during discussion...have your regional NPC rep come in and facilitate. If this isn't her forte she can find someone who can help you.

If there's an unofficial "brother/sister fraternity" mode on campus, do everything you can to squash it (up to and including getting your Greek advisor or national consultants to make it sound like if you don't cease and desist, you will all drown in a lake of fire). That kind of stuff just makes girls crazy and possessive and goes a LONG way towards animosity among the orgs.