My chapter is young (5 years in april!) and on a very anti-greek campus, something we have to fight a lot. Because we were going national, without NPC so they did a direct request to AST and a few other orgs. The momentum is really the key, also finances and organization. Colonization can be overly expensive. Moreso than pledging, plus you need to pay for dues and set up costs. lots of women like the idea but actually doing the work is hard and tiring. The benefits are amazing though you learn so much and grow tremendously.