Class: Talisa, possible. Cersei, nope. Same class as all the highborn who say MAY-ster.

Culture: Same.

If we’re going to start with regional dialects, perhaps Arya, Sansa, Bran, and Rickon should speak like their father, other brothers, and the rest of the North—to my understanding, some sort (or different sorts?) of Northern English accent (though I’ve seen Robb’s described as Scottish, and my own Canadian English ears are none too good at picking these apart). It’s doubtful that their lady mother and whatever other non-Northerners would have such a huge influence on their speech. This is a much bigger deal than the pronunciation of a single word, and yet it has not been attended to. This makes the dialect explanation of MAY-ster vs. MY-ster unsatisfactory to me.

In reality, I think the showmakers simply made a good trade off: excellent young actors, who unfortunately do not have and cannot convincingly put on such an accent.

I do realize I’m on track for some sort of nitpicking award.