According to the producer,I guess Westeros was the first place to have Starbucks.
“I can’t believe [it]. Our onset prop people and decorators are so on it. 1,000 percent. I just honestly can’t… Nowadays you just can’t believe what you see, because people can put things into a photo that really doesn’t exist, but I guess, maybe it was there. I’m not sure. We’re sorry! Westeros was the first place to actually have Starbucks. It’s a known fact.”
Some other funny things GOT fans found in scenes.... Some real and some are not.