Walt Disney World Orange County (FL)
From The RadioReference Wiki
As of June 2013, WDW has been changing over to Capacity Plus TDMA. Seen on a recent trip (July 10, 2013) to DownTown Disney, "Security" ops "Guest Services" and "Cast Members" where wearing the 7550 Slim with extended battery and surveillance mic's.
Look for updates to happen soon now that WDW is using a CP-MotoTrbo system.