I'm not in a service GLO, but a professional one. (Which happens to do a ton of community service). Because none of our "social" GLOs on campus are national, we just had "Greek Council".
All of our GLO chapters were in it, professional, service or social. We adhered to the same rules and regulations as the social GLOs, and participated in almost all of the greek events (greek week, greek sing, etc.). Not all of the non-social greeks participated in everything, but they did have the same rules. I think this will be an issue at each campus, but also will vary by how your greek system is structured.
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SilverTurtle@greekchat.com
Phi Beta Fraternity
Phi chapter