While I can't exactly answer your question...I do have some insight.
We've had ladies from our nat'l org come to do workshops with us at various points. It entailed either a day or an evening commitment and we did all sorts of activities. The plus side is that for the girls who really bought into it, it can make a huge difference. Unfortunately, much of my chapter thinks they know better than these ladies. The suggestions proposed did not get implemented and in retrospect, visits felt like a waste.
Hence my advice to you....if you find that the consult is do-able, really evaluate the extent to which you're willing to buy into their message. If you are...I say go for it