TOT was my favorite attraction when I was a kid. I LOVED Bellhops who did a lot of "performance theming," Disney's name for when front-line non-entertainment cast members act "in character." Really added to the experience.
Later I worked there and prided myself in this theming. However, we all knew there was a time and a place for this "show." Loading people on the elevator or welcoming them into the library was a perfect place to plus up the guest experience with some deadpan jokes and a creepy smile. Standing at the entrance as a greeter to answer questions about height limits or Fastpass was not something any of us really considered staying in character for. It just angered the guests and made them feel like we are treating them like morons who actually believe they're in 1939.