Can you enjoy Disney World as an adult?

My girlfriend and I recently got back from a spring break trip to Disney World.  She's from the west coast and had been to Disneyland many times, but I wondered if she would have any interest in seeing the colossus that is Disney World.  Half joking (but also secretly enthusiastic about the idea), I asked her back in November if she'd want to meet Mickey and Minnie in Orlando.  She was 100% on board, so the half joking idea became a dead serious plan.