Dave - did you get any indication what those disks are that Obi-Wan and Anakin are standing on? Are the figures FIXED to those disks or are they just stands that are thrown in with the playset?
I was working the event as well. Dave caught me off-guard being somewhat more clean-shaven than when I saw him earlier in the week.
The Anakin and Obi-Wan figures are NOT attached to the discs. The discs are actually set pieces from the duel, and elaborating any more would have spoiler implications.