Dragon Con - for a day

While ACat is out in California for the weekend, I'm going to Dragoncon tomorrow.I know at least a few people who will be there, and will probably meet up with me at some point (and would be glad to hear from anyone else who'd like to!), but I'm not particularly looking to anyone to entertain me - the people watching alone is good for hours, as I recall. What I *am* looking for is any idea of what time registration opens? The website doesn't say, far as I can see...

I'm taking MARTA to avoid parking logistics and expenses, and only having to coordinate myself so I expect to be there pretty early. I sometimes feel like the only morning person in all of fandom - anyone out there who might prove me wrong?