Yoho, did you notice that the park looked more like DL than WDW -- what with the Indy ride and the smaller castle?? The HM was also the antebellum mansion from DL.
I did notice that. They also had DL's Small world. I assume that they only referenced Disney World, because it was the more logical choice given they were in RI.
I'm pretty sure they were just references to Disney themeparks in general. It's not that big of a deal, it's just a cartoon. It doesn't have to be perfect.