I have no dog in your hunt. Just wanted to lay out what we've done (and are doing again) for NERDS that seemed to work really well:
The "official" event days are from Thursday thru Sunday, with most folks coming in on Wednesday sometime. We intentionally schedule the only real "group dinner" (just a Bar-B-Que for NERDS) on the Friday evening rather than Saturday. The idea being that if folks who are pressed for time they can come in a day (or two or three) early, and then head on back toward home on Saturday AM without fear of missing out on too much.
It also looks like there will be some of the NERDS coming in at the beginning of the week (Mon - Tues) and extending their vacations and fun.
Not sure if that is something that appeals to you South-Westerners, but thought I'd offer it up as an alternative.
PS - Great looking event web site!!