Accepted an offer to join the EMBA-Global Americas and Europe class, starting in May 2018. Applied September 14; interviewed in NYC on October 18, got a call from Admissions offering me admission on November 9. Accepted on the spot.

Definitely a non-traditional student in almost every way, except my current industry (Consulting). 33, female, undergrad in Psych, first Masters in Foreign Service. Spent five years in federal government in DC, then randomly switched to Consulting and never looked back. Also, for those who were asking (in a related thread, I think): taking the Executive Assessment helps A LOT if you're not 100% confident in your abilities to ace the GMAT. Because the EA is so new, they don't really have a baseline to compare it to, so the test essentially becomes a formality, rather than a measuring stick. Based on my own experience, with essays, interviews, and basically stalking the Admissions Committee and attending every event in NYC that I could sign up for, there are two most important factors for admission:
1) your fit
2) your commitment to/ obsession with the program
In terms of fit, this is really for you to decide. Yes, Columbia is an M7, and London is #1 or #2 global EMBA (depending on ranking source). BUT that does not mean that it will be a good fit for you specifically. You just have to visit the campus, talk to some people, including current students (not necessarily only in the Business School) and decide for yourself. Case in point: Wharton is #1 this year, yet when I interviewed there, I just didn't feel like I really wanted to be there, even though it is a great school. It's all about your personality, career goals, etc.
In terms of commitment to the program, it is connected to fit. Go to as many in-person info sessions as you can. Attend webinars. Talk to alumni and current students (London hooked me up with these). Call the Ad Comms in both schools (or all three schools, if you're applying to Global-Asia) and ask many, many questions. (Not just to ask questions, obviously, but show them that you've given this decision a lot of thought and self-reflection). At every in-person event, be sure to come up to Ad Com staff, introduce yourself, and ask even more questions. Get them to remember your name, to know who you are. Show them that they really are your #1 choice. (If that is true, of course). Once they are confident in your commitment, and if everything else checks out (i.e., you don't send in essays with typos, etc.), then you should be good.