Just to show how absurd SDCC's registration and hotel systems are, in 2 years of their online badge registration system, I've only managed a single day pass for Thursday of this year.

In that same time span, I've been assigned my first choice in the hotel registration lotteries both this year and last year. And it's a downtown hotel within reasonable distance of the convention center to boot. So apparently, at least for me, it's a LOT easier to land housing than it is a badge for the convention.