Strangely, I keep finding useful links via twitter -- the feed is right there on the right. I'm going to list them all here just in case anyone else finds them useful.
Here is a roundup of advice and tips on attending the conference from the Law Librarian Blog.
Here is a link to the weather in DC.
Here is a printable schedule for the conference, updated with room assignments, from Tom Boone.
And here, also from Tom Boone, is the final program.