Last year we left Saturday morning partly because of the excitement of going for the first time and partly because Nimby had to be there by Sunday.
Getting there Tuesday would be a good time of arrival. It's before the madness that takes place on Wednesday/Thursday and it gives time to get familiarized with the massive layout of the Gaylord and most importantly to volunteer your sweat and tears for setup.
I'll run the numbers again this weekend and see how much of an impact that makes. I'd still like to get 1 or 2 more people, but we'll see how things go.
FYI: Be sure to pre-register yourself on the QuakeCon website and fill in as much information as you can so when 9PM on April 15th rolls around, regging for the BYOC will be much easier. That site will be swamped for several hours that night and any precious seconds you can save will be helpful.