When I had the chance to go on a Jungle Cruise at Tokyo Disneyland, I noticed the skipper talked with sprinkles of prolonged vowels and uncommon rising and falling intonation patterns.
Is this "dialect" original, or was it borrowed from existing profession/region?
Edit: you can check video recordings of the ride on Youtube:
- By a male captain
- By Captain Sato: Part 1, Part 2
- By a female captain