Based on his comments, I wouldn't be surprised to see the theme "responsibility"

This was quoted in a recent SF chron article: Although he'll never tire of promoting the principles behind Burning Man, Harvey says that the myriad tasks he's expected to perform in anticipation of each year's event have become tiresome, more like chores than labors of love. He's currently worrying ...

These guys are truely living up to the theme of a metropolis... They are charging for a reserved preferred parking spot in the City! Assuming a 100 x 100 plot = 10,000 square feet and you can fit a tent with two people on 100 square feet, you could sell 100 parking spaces at $250 per space (two peop...