I had been SO leery of an "outsider" doing a Star Trek movie. I am 44 and have been watching the show since reruns in the mid 70s. If you are like me, you need not worry.
I never once wondered what time it was, the movie FLEW by. And my friend who went with me has never seen any incarnation of Star Trek and she was amazed by this movie and wants to see it again.
If you are a lifelong fan like me, just a heads up that the scenes with Leonard Nimoy are wonderfully touching. And the actor who plays McCoy? Dead. On. He has every mannerism, inflection, tone. etc down - he's like channeling DeForest Kelley and in the BEST way!