Just got back from character palozza. It was from 2:10-2:30 at tower of terror exit. Today there was Snow White, snow queen, Pocahontas , Miulan, tiana, stitch and Robin Hood. We got pics and autographs with all within 15 minutes.
Palooza is confirmed through November 9th and no one appears to know if it will continue beyond that date.
There would only be one Palooza on your specific day and the earliest the characters would arrive would be 3:30. Give them a few minutes because they have to walk over from the Fantasmic island.
Robin Hood!? Oh, man, I would love to run into Robin Hood someday. He is my sister's favorite; we saw him out near the old Mickey's Toontown station in 2004 and didn't stop (we were on the train and didn't get off), and never saw him again.
With or without Robin Hood, I really need to try to catch one of these next time.