Pretty much everything. Alcohol is illegal here, there's no privacy (I live in a tent with 25 other guys), didn't bring my pipes, no high speed internet, etc. Going home is going to be like jumping forward in time a few decades/centuries
I agree with Lonestar, I had a brilliant flash :D when I read the heading of this post, and I very much agree with peace and quiet, just time to sit relax with a good pipe and ponder on something totally meaningless......