The certification process was fun, efficient and experience-based as we both tried the Miki Island Experience as participants, as well as having a step-by-step facilitators walkthrough of the whole process.
The link to GDQ and IMGD gives it credibility and you can easily see team behaviors from daily work reflected in the Miki Island experience.
It is a great tool to start a leadership or group development program of larger scale, as well as a stand-alone team activity! I highly recommend it!