No, I'm not formally associated with the LAT Festival of Books and have never been on a panel, but I've been faithfully attending this event annually as both a reader and writer since its inception some twelve years ago. The list of panelists is out--
http://www.latimes.com/extras/festivalofbooks/authorlist.html--but it doesn't include the rest of us signing in various booths. (That's where the real action is.)
A bunch of us on crimespace--Brett Battles, Sue Ann Jaffarian, Alex Sokoloff, Christa Faust, Stephen Blackmore, etc.--live in L.A., so we can probably be of some assistance to you out-of-towners making the trek to La-La land. So if you have questions about where to get the best affordable sushi in the area (Sawtelle, of course!), where to park, or just how this whole thing works, post your questions here and one of us might be able to answer.
BTW, the Mystery Bookstore in Westwood will be having its annual Friday night party on April 27. This year the Southern California chapter of MWA will be cosponsoring the event, so it may be even bigger than usual.