For me it's not so much acting like a kid at Disney, although when I'm on Space Mountain I probably do, it's about being transported back to that time as a kid...(late 70s - mid 80s). Things like sitting in the high-back chairs in Poly Lobby, walking up the monorail ramp to the platform, going through the Contemporary on the monorail, Peoplemover, walking into SSE, jumping water at Journey, etc...those kind of things just make me think of how many yrs ago I was in that exact spot enjoying the same thing as a kid.