Ok, I'm kinda confused by something. I haven't gotten to ACK yet, but I just read that Margaery Tyrell is marries Joffrey. So does that mean in the show they're going to have a character played by a 30 year old actress married to a character who's played by an actor who appears to be in his mid-to-early teens? Or are they changing that for the show?
Margaery was older than Joffrey in the books as well, although the age difference was more like 3 or so years. They haven't changed Joffrey's age here, he's still about 13 years old even though Jack Gleeson is nearly 20.
So yeah, they're just going to age up Margaery a bit so she's about 19 or so; that way we won't have to swallow Natalie Dormer as a teenager. And they'll just highlight the age difference.