This is just my opinion, please if anyone reading this loves FFXVI don't take it personally!

IMO: The story is ass, the visuals are spectacular (especially the Eikon fights), the soundtrack is amazing, and the gameplay is a weird combo of FFXIV and DMC5. If you're not opposed to some game spoilers, I would really recommend watching a stream of the beginning of the game just to see what you're getting into.

If you've played other mainline Final Fantasy, it's very different gameplay-wise. Your party is AI controlled, and you only control the main character of the section (usually Clive). This really turned me off from the game tbh. The mainline story can really drag too, and the sidequests vary in quality so much I genuinely wondered if they had several different teams working on them and not communicating. The only ones I really liked were the hunts, because I think that's the only time you as a player actually have to think about your moveset and how to tackle a boss.

If you can get it on sale, and you're willing to sit through like...15h of intro to actually get to the main parts of the game, go for it. If you want something a bit shorter, but shows what modern Final Fantasy games seem to going towards, maybe try Final Fantasy 7 Remake. If you want a cleaner version of Clive's gameplay, I recommend the Devil May Cry series, especially 5.