The other day it was pointed out to me that one of the biggest differences between the show and the books is that they almost never uses horses in the show. I couldn't stop thinking about that this episode. In the book they always ride garrons when they range north of the Wall, and if these guys had garrons on this little expedition they would have been able to get back to Eastwatch after recovering the wight with no issue.
There were some other issues I had. If the wights can get down into the lake and still be able to wrap those giant chains around the dragon and haul it out, why did they have to wait for the lake to refreeze before attacking the A-Team? Nevermind the chains themselves coming from nowhere.
Still, the episode hit all the right fanservice pressure points. The conversations while they were ranging were all pretty great, and the big action scenes were pretty great. Nice to finally seen an undead bear, even if it is just one. Makes me kinda bummed that the direwolves are all dead or MIA. Poor Ghost doesn't get any screen time even though he's still alive. Would have been nice to see him interact with Dany.
I like the interactions between Arya and Sansa, even if I know that this story arc will end in a way that I find pretty unsatisfying, having already read the leaked scripts and summaries.
FWIW, that's true for pretty much all vampires and their thralls in every vampire story ever.