I'm impressed that plane was able to get up at all with 158 people on board. And last I checked those Cessna's normally have a really hard time getting up to 38,000ft. I'm sure they meant 3,800.
Hipsters generally stick to a surprisingly strict dress code that tends to be complimented by some sort of extreme facial hair and would like to believe their lives would be better lived off the grid.
I'm awaiting a response on Facebook about details on the scheduling. If I don't get anything back, I'll probably find something else to do that weekend.
Edit: Their FB response:
Unfortunately, we have been forced to postpone the event due to logistics issues. We will be announcing makeup dates...