I'd say most of the people already knew a little bit about Docker (at least basic knowledge), but it was the first time with Kubernetes for most of us... It was a very good introduction to the technology, and we spent a few hours playing around with pods,services and replicationcontrollers in our own cluster (it is pretty simple to setup a small environment using Vagrant or Google Cloud Engine.
I'd love to attend to more whole-day events like this one (lunch was a plus, but it is not needed whatsoever), since it is a great way to learn/improve our technical skills and helps to build a "community" (I saw some familiar faces from Python meetups in the workshop)
This is a picture of all the participants:
(taken from Shuttlecloud twitter account)