Board Thread:Wiki-Related Discussion/@comment-15736398-20140929063402/@comment-4975807-20141004034758

Daveyelmer wrote: Applegirl, I disagree that there's any ambiguity here. Go back and watch A Tale of Two Sisters and pay attention to how Mist Haven is talked about. It's clearly spoken of in the same way that people in the real world would speak about traveling, say, from Utah to California, indicating that it and Arendelle exist in the same space but are separate places within said space.

We're also not likely to get further confirmation unless somebody asks Adam and Eddy about this directly given that we're likely not going to see Anna's actual journey to Mist Haven, at least based on the description for the next episode.

I respectfully disagree with your opinion that the first episode alone is enough confirmation. Based on what was seen in the first episode, it can be assumed those things that you mentioned are true. I'm not saying it wasn't implied that Arendelle might exist in the same world as the Enchanted Forest, but I'm saying it's better to gather more in-show confirmation. Even if we don't see Anna's journey to the EF in the next episode, any further along episodes might feature it.