Watched Frozen today and it was quite the mess of Scandinavian culture and stereotypes. Don't get defensive if you really love the movie. It was indeed a cultural mess, but in an entertaining way. Also, while watching it, I unintentionally came up with a somewhat sinister theory of what is going on behind the scenes of the main story. (Keep in mind this is just for fun. I can't imagine this was what Disney was thinking. Consider it an alternative interpretation of the Frozen universe)
While it takes place in some Disney fantasy country called Arendelle, it's clearly strongly inspired by Norway, what with all the mentions of fjords and such. But the people in the royal city are wearing clothes that looks like a mix between Swedish and Norwegian dress and they raise a maypole which is mostly a Swedish tradition in Scandinavia (it's still done a few places in Denmark too and even fewer places in Norway, so really, it's seen as a Swedish thing). At one point they meet a shopkeeper who speaks with an accent that sounds a lot like how Swedes sounds when they make fun of Norwegians. And of course there is Hans from The Southern Isles, which sounds like a fancy way of saying Denmark (it's mostly made up of islands and it's the most southern country in Scandinavia).
So what could all this mean? Let me give you a little (very simplified) history lesson.
For a few years Sweden, Norway and Denmark were joined in a union, but then the Danish upper class went a bit crazy and killed some of the Swedish upperclass. Sweden wouldn't stand for that and left, so for many years it was just Denmark and Norway. Then the Napoleon wars happened. Denmark sided with Napoleon, so Sweden sided with England if England would let Sweden have Norway if they won. England agreed, and as we all know Napoleon lost. The Norwegians had been trying to get Denmark to give them free for a long time so they were not happy when they were suddenly forced into being part of Sweden. They made so much noise that years later the Swedes finally let them go. The Norwegians decided they needed a royal family of their own, and asked a Danish prince who weren't likely to get the Danish throne any time soon if he wanted to be king of Norway (Partly because the original Norwegian kings were in his blood, partly because he had a British wife which would help their relationship with England). He agreed, changed his name to a Norwegian one and ruled Norway through the Second World War.
So Frozen could be taking place during the time Sweden ruled Norway. Obviously that would mean Elsa wasn't the actual queen if she was living in Norway but rather some kind of Swedish official in charge of Norway, but work with me here. That would explain why the shopkeeper is the only one with an accent. He and his/the family in the sauna are the only actual Norwegians in the whole damn movie (An argument could be made for Kristoff, but he's clearly a Sami and they don't always like to refer to themselves as belonging to any nation). The accent is silly because he's a low class Norwegian through the eyes of an upperclass Swede. Everybody else are rich Swedes acting like they own the place, with a power hungry Dane who's still angry Denmark lost Norway plotting to take the country back. So basically, the story is about upperclass invaders of two different nations having a piss fight over Norway while the Norwegians just have to sit and watch them because no one is asking them what they want. And to make it even worse for Hans, this would mean that in a few years Norway would be free and ask one of his brothers if he want to be their king while Hans has to watch from his prison cell.
So there you go. Frozen is about fancy upperclass foreigners who think they own the place.
EDIT: Could also be a reason why Elsa doesn't want Anna and Hans to marry. Sweden and Denmark weren't exactly the best of friends, so of course Elsa would think "What on earth are you doing Anna? A Dane? Really? No no no! I am in charge of Norway so my sister can't marry a god damn Dane! What are people back in Sweden going to think!?"
EDIT: Again, I have to make it clear, this is not at all serious. It's just for fun. The country of Arendelle is just something Disney cooked up so they wouldn't have to stick to one culture, so we get a mix of a lot of Norway, some Sweden and Sami, a bit of Danish and even some Finnish and Icelandic thrown in.