Let me tell you as someone who has seen it.
One viewing may not be enough to make up your mind.
The movie has a lot of things to take in and once you managed to process it you may want to see it again to make sure your opinion is valid.
In my opinion it has some stylistic choices and characterizations that not all people will agree with, but it firmly puts the story back in the Trek universe we all know and love.
It is a seperate timeline but keeps it's ties to the prime universe.
Not a spoiler, but watch out for a couple starship models from the past. Made me grin.
There is probably a lot of stuff I missed on first viewing as well, which I have time to look for because know I know what to expect.