This is a very popular ceremony where I live. Years ago, I tried DMT the active ingredient in Aya. An extremely powerful experience but just that, an experience. The people I speak to who use it regularly are like religious zealots, full of ego and thinking they are superior beings (there is a cloak of love and humility but hang around 'em for a while).
I see Aya as another "short cut" to enlightenment, or using a less new age term, maturity. You gotta do the hard yards....