Plus you had to pre-register.
It was chilly and rainy but super fun. This is very likely not the last one (we've had some summer unofficial events there several times already), so you'll have another chance. Definitely worth traveling for!
I also considered coming (was debating between that and DVOA) but once I knew what the forecast was I didn't bother with registering. I wouldn't have driven through a ice storm for either event, and I would have had to leave super early in the morning to do the Mall event and get back for a theater show I had a ticket for tonight.