I've largely been very complimentary of the show and its adaptation, bar a few needless hiccups and sideplots, and Spoony and RN7 are just on a WUM, like they always have done in the past with popular shows, so don't mind them, but for me this episode was really lacking and I can understand the frustrations of a lot of viewers. We were given 50 minutes centered purely around the wall and the first 20 of that was mostly revolved around Sam and his cheesy questions about love/sex and dull conversations with Gilly, it really left me bored. I'm not saying there needs to be action, but f*ck, if you're going to spend 20 minutes progressing characters, do it better than that.
Also, that 20 minutes could've been put to better use. Why waste so much time on Sam when Jon was the one they should've focused on for most of the episode, seeing as he was basically he f*cking hero of the whole thing in the books and around 80% of it was from his perspective. It never really felt epic, I know a TV show has a smaller budget than a movie, but Blackwater still felt epic, this didn't. They just didn't grasp the scale of this battle at all, of the wildling army, of the insurmountable task at hand. I'm not saying they should have 100k wildlings blasting towards the wall at once, but I'm pretty sure we got more than 2 giants and a few wall climbing idiots in the books.
I guess I also expected a mammoth hour episode that covered all of the wall (at least, the battle), so the ending was a bit disappointing.