I had a ton of fun, but also found myself very frustrated at certain points, especially when it came to the ending. It’s a really stupid movie. However, I enjoyed it, and don’t regret seeing it. Go if you like the first one or feel a desire to see it.
Also, the villain’s Khan. If you think that’s a spoiler, it’s not. It’s so obvious in all the marketing that it’s Khan. J.J. Abrams thought that he could market a Star Trek movie without playing up the appearance of one of the series’ most iconic villains, and it only made it frustrating in the lead-up since it was blatantly Khan. Abrams, do not pull this “Mystery Box” shit with Star Wars. It’s not fun trying to keep up with all your “secrets” and then going into the movie to find out they’re all bullshit that barely made a difference at all.