Hopefully it is a little more organized by the time you get there. I was there Friday (Picnic) and Saturday (preferred dining) and it was a little nutty. Careful with the preferred dining you don't have a "color" it just says preferred dining section. Some of the CMs didn't know where to send us without a "color."
Also, if things are the same, don't give you preferred dining ticket to the first CM. You need it to get into the preferred dining section (another CM checks it). If you leave to get food or visit the restroom or whatever, be sure to get a preferred dining ticket from the CM so that you can get back in. We asked a few CMs and took the sum of the average as far as where to go.