I went this past weekend and I did like it. I didn't find it too preachy/informative except for maybe one scene in Act 2, which could be trimmed. As far as content, I know/understand basic technology privacy knowledge, but I was still interested in what was presented. The storyline is flimsy, but I actually didn't mind too much (moreso in Act 1 than Act 2).
The cast was great. We all know Dan's the main character but the supporting cast works well, portraying different experts/speakers/characters (fictional & non-fictional). There were bits of improv which was handled nicely & as seamless as possible.
Now, in terms of audience participation since it's been noted in the show's description, I feel like there are three levels (the first two aren't really spoilers as they're kinda implied by the show's description; I did hid the third as it's a little more detailed) :
1) None - you can just sit there, not have your phone, don't need to shout out anything, etc. I don't think by not doing anything will make you feel like you're missing out. You might be included in something as an audience member as a whole, but you don't need to do anything if you don't want to.
2) On-the-spot Active - there are moments when the cast breaks the fourth wall and addresses the audience to do something on your phone, such Google something and then shout out your search result... this happens just a handful of times, more during Act 1 than Act 2, if I remember correct.
3) Pre-determined Active -
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Before the performance, the show reaches out to select audience members for further active participation, such as being brought on stage. If the show doesn't reach out to you beforehand, you won't be asked to go onstage (I know that's a fear of many people). And if the show does reach out, you can always decline. :)
Overall, I felt it was worth going and I'm hoping to try to rush it later in the run to see what changes they make.