This is great advice! (And Glitterkitty, thanks for the plug

)
PNMs, keep an open mind about being Greek. Do keep in mind that there are all kinds of GLOs out there, not just NPCs: service, professional, also locals, and others. Each Greek chose their org/type of org because everyone wants something different from a fraternity/sorority. For instance, I chose SAI instead of an NPC because I loved the idea of having all my sisters being musicians like me! And other friends of mine in the music department chose an NPC rather than a music org because they wanted to be around people of DIFFERENT majors/talents then their own. And that's fine too.
With being Greek, IMO, wherever you go...you can't go wrong.