Well I just saw it and it's... awesome.
Spoilers ahead.
Depending on how you look at it, it's not the Enterprise crew that we know. The timeline's been changed (Star trek LOVES time travel) so while they're still Kirk, Spock, and all the rest their history is different.
Kirk loses his father, Spock's mother dies, Vulcan is destroyed, etc. So this history will never have certain stories happen. Spock's mother will never be on the ship to Babel, Kirk will never have his father at his graduation, the crew will not journey to Vulcan after retrieving Spock from the Genesis Planet, etc.
So if you can get around the fact that it's not the 'old' crew and realize that you'll never see Shatner and the rest in a regular Star Trek movie, it becomes more fun.
Pros
Great Action.
Talented actors all around. Quinto is AWESOME as Spock. Urban is awesome McCoy.
Nearly everyone got a chance to shine. Scotty had a bit less time but still great.
Fan service! From throw away lines to insider jokes, it was there. Can we all guess what happens to the crewmember in red?
Cons
Vulcan is destroyed. I like Vulcans.
Lens flares. Good golly they love lens flares. It's like someone just discovering a photoshop filter. Lens flares constantly though the movie.
Go see it in IMAX if you can.