Does anyone seriously believe that Merriweather is significantly more "green" than Nissan? It's just as trashed at the end of the night, the same toilets are overflowing, the same 5-10k cars drive multiple variances of miles on highways to park in the lot (of either dead grass or gravel, take your pick) and idle in traffic going in and out, and the electricity is coming from the same type of source, as far as I know.
I don't think leaving a few more trees around the perimeter makes it worth crying about.