Thoughts on running a (software engineering) conference
Get a good night's sleep the day before the conference. If you're doing a good job you will barely sleep at all for the rest of the conference.
Naps in hotel lobbies are a great way to spend superfluous lunch hours.
It sucks to cut off a great speaker because you're running out of time. Try to massage the time limit into them.
Get everything that needs to be printed finished at least a week before the conference start (unless you possess some deep love of frantic all nighters).
The time in between talks is not the best opportunity to expose people to your taste in indie electro pop anarcho vegan grindcore. Keep it simple. (D'oh!)
Competent and responsible people are worth their weight in gold. Knowing someone's got your back is an awesome feeling.
What comes off as an asshole over email can easily turn out to be shy and extremely busy in person. Mind you, I still think, uh, what Sirius Black once said still applies.
People have an absolutely astonishing capacity to not respond to emails. This was the most stunning thing I learned while organizing the conference. That was probably naïve of me.
Emails are informationally porous. No one actually bothers to read them. If there is anything they need to remember, say it within two or three paragraphs.
Distribute lots of power bars throughout the conference. I learned this at FutureRuby and RubyFringe but completely forgot come D-Day.
Hotel internet just sucks. It's almost worth selecting a venue on this basis alone.
Nerds need to be coached into any social event. You have to force them to interact in some way. I occasionally still suffer from nerd-social-paralysis, but it's easy to forget when you've been wired for a week, constantly talking to dozens of people.
On a related note, students find $7 drinks morally obscene.
If you're giving away stuff in a raffle, write the damn randomizing script ahead of time.
Always get your speaker's contact details and travel information beforehand. Due to the efforts of my excellent coworkers, the only time I had to worry was when a speaker checked in a day late.
The day after the conference can be brutal for some people. You go from being relatively important and receiving dozens of emails a day to a nobody the second the conference is over. After you physically recover, schedule some pleasant evenings with the friends you've been neglecting.

