[pjotv] One of the main reasons why I like the show so far is because even the changes that have been made do not fundamentally alter the trajectory of the overall story
As a major book-lover, when it comes to books I've read being adapted on-screen, I find the top factor that determines whether I enjoy the adaptation or not is whether it stays true to the *overall* storyline - especially as a series.
For example: the 2005 movie The Lion, the Witch, and the Wardrobe? LOVED it. Prince Caspian? Could have been better, but decent overall. Voyage of the Dawn Treader? There's a LOT I really like about it, and as a movie told apart from the book series it's good, but I REALLY didn't like that they stole elements from The Silver Chair, given that it changes the given story AND means the next story can't really be told.
Another example: the Lightning Thief movie? I liked it. Sea of Monsters? The third act completely rewrote the story. Like, the writers backed themselves into a corner. There was no way to continue the major storyline as told in the books if they had continued the movie adaptations.
Now we have the show, and even with all the changes - good and bad - the major storyline is still intact so far.
Gabe being abusive in more subtle ways? He's still abusive and Sally needed to get out of that relationship. Characters knowing or figuring out certain plot points very quickly? Well, it does reduce some of the dramatic tension unfortunately, but it still doesn't change where the storyline is heading. Annabeth not having major personal beef with Tyson spelled out in the show? She still has to trust a "monster," and Tyson's role in the story remains largely the same. The Party Ponies don't show up? That made me REALLY sad but even I have to admit it doesn't change the broader story. A few new characters are added in? They don't displace the major characters in their roles, and in some cases flesh out the major characters even more. Thalia's return and backstory changes? Unexpected, but can actually serve to expand on and highlight her character arc even more and emphasize her role in the overall plot.
Again: despite the changes being made, none of these changes fundamentally change the plot thus far. Of course, there's a chance the plot will drastically change later - though I sure hope it doesn't. But as it stands, while some details are in wild flux, the big picture story has been true to the books - and for an adaptation, I will happily take it and enjoy the show.