Careful planning is the key to a successful SxSW right? Well to a point. As Austinite Bijoy Goswami pointed out, what you cannot anticipate is SXdipity: discovering something awesome while looking for something else at SXSW.
The only meaningful test on virtual reality's effectiveness is if it makes real life better. Humans should never be passive consumers of virtual reality but must play a proactive role in the experience.