I travel on a city bus every day, and like PP Im not really into the chatty jokey drivers. Sorry to be blunt but your job is to drive me from A to B. I just want to get to my destination and most times I really don't want any interaction.
I get that for most Americans travelling by bus at Disney is a novelty and something they don't do in their day to day lives. For them I guess its all part of the Disney experience. but for others like me, its just something we do all the time.
And especially in the mornings, when I haven't been to Starbucks and haven't had my morning coffee I really don't want any interaction. In the evenings, after a long park day, again Im not into interactions, my feet hurt, and I'm tired and I've had over 12 hours of sensory overload, so the peace and quiet of the bus ride back to my hotel is very welcome and helps to get my brain into that unwind mode.