UNPOPULAR OPINION: I don't care ab what yall say the movies were good. They’re way more beginners friendly (even thought most people who would watch probaly already knew a bit about greek mythology they explained to the ones who wouldn’t know), they had one of the Goddess speak Greek, they had a Greek Actress to play a Goddes and they actually used the Greek letters rigth ( they didn't use D's as A's or S's as E's >wich is one of the things that walways annoys me in American TV who decides to use Greece/Greek as purely a Aesthetic)
They had things different than the books? Yes but a lot of adaptations suffer from it, when we read a book we get an inside of the Characters mind and the only way of achiving in movies and tv series would be by using V.O narration that gets boring really fast and becomes a gateway to tell instead of showing (First Rule: Show don't Tell)
In the movie they show the gods not being good parents but they still had scenes when we could see they cared for their children so we could see way Luke would want war but we also see that is way more extreme solution than the problem. In the Series (SPOILER FOR THE NEWEST EPISODE) we see Athena letting Echidna and the chimera inside her Temple, a place that should've been a safe heaven for these 3 (2 and a half) kids just bc she didn't liked Percy sending the Medusa's head to them ( Yes is a great comeback to Medusa's "i wasn't like you i was you" line wich is great in a story telling but i'm still icked that they used a Roman version on a "Greek" show) what makes Luke wanting war and dethroning the gods a way more accurate response to their neclect.
Over all i just feel like the movies had a bigger care to make they look and feel like Greeks and the show is only using it for aesthetics (what was probably also the reason on the books)