Have you ever done any of the special "behind the scenes" tours? Over the past couple of years my family has done the World Showcase Segway tour, the all-terrain Segway tour at Fort Wilderness, the Backstage Safari at Animal Kingdom, and the Seas Aqua Tour (you go into the aquarium at the Living Seas, but it's "snuba", so you don't have to be scuba certified). We've loved all of them! There's a lot more out there to choose from as well, depending on what your brother would find interesting. It's always neat to see WDW from a different perspective!