Not

knowing where you'll be sleeping for the next three days is the best. Seriously.

I think getting thrown out of your comfort zone makes you learn so much about yourself. As of now, I don't know where I'll be sleeping or in what (I lack a sleeping bag), but I trust it'll work out fine. I look forward to being exhausted, surrounded by vegetarians so that I'm not the pain in the ass to cook for, and meeting wonderful people who care.

http://www.sustainabilitycoalition.org/spring-convergence

EDIT: It was indeed a lovely time. Fun, friends, and vegan food.