I am happy about fast travel. We had literally seasons of characters walking from one place to another, it was like Uncharted 4 of tv shows.
What's weird is that Season 1 had no walking. People went from Winterfell to Kings Landing within an episode. Jon arrived at the wall within an episode. Tyrion went from Kings Landing to Winterfell to the Wall back to Kings Landing then to Vale then to his father's camp, fought a war and finally went back to Kings Landing all in one season. Lady stark was traveling between kings landing and winterfell like she had fast travel unlocked.
And then all of that changed in Season 2 and 3 where the show turned into groups of people traveling. Arya and Gendry then Arya and Hound, Jamie and Brienne then Brienne and Pod. Bran and his group of idiots. Jon Snow and Yigrette. Tyrion traveled with Varys then lord friendzone for an entire season in Season 5.
I am glad we are done with that. lets focus on character interactions between the last few remaining people. thats why people tune in to watch the show.