I saw the film a couple of weeks ago. Pretty good! Not a whole lot of action, with just a bit of Leyte Gulf stuff and of course the final battle on the way to Okinawa.
It's not a love story, either. That is, it's more of a drama about familial love, friendships forged in battle, and the heartbreaking losses caused by war. Lots of sniffling in the theater.
The Yamato itself looks great on the big screen! The partial 1/1 set was completed on-screen via CGI, and looks very convincing. They also used models and full CGI to show her cruising at sea and engaged in battle. Most of the close-up battle action featuring the main characters centers on their three-barreled 25mm AA emplacement. We do get a couple of nice scenes of the big 18-inch guns firing: once in the Leyte Gulf scenes, and again later when US aircraft spot the Yamato as it was heading to Okinawa.
With lots of interior and exterior shots of the Yamato, this film should be interesting for any Yamato fans!
The partial 1/1 set has been preserved and can be toured. I still haven't made it down to Kure to visit the Yamato museum (with that magnificent 1/10 Yamato), but when I do, I'll visit the set. too.