Yes, it's impossible to talk about this movie without giving too much away. It will play for both fans and non-fans, but I'm going to nitpick on two points. First, sending Chekov to replace Scotty in the engine room. What do navigators know about engineering? Second, J.J. Abrams is a little too fond of swooshing cameras with ultra-quick cuts during the action sequences, so you don't see precisely what's happening, only the result. Maybe that doesn't bother other people, but I think it's a cheat.
That said, Star Trek into Darkness is still a whomping good adventure story that plunges right in without bothering with unnecessary exposition and doesn't sag in the middle, hurray! It's remarkable in one other respect: it manages to be simultaneously nostalgic and brand new. And that is quite an accomplishment.