Overall, I would say I enjoyed the animation with a lot of beautiful scenes and the sound/OST are also great.
Due to a lot of characters, there are also a lot of seiyuu, and I really enjoyed watching the anime in its original language with subs.
The plot is not bad at all, despite what I have read in the reviews from others who are well-known with AL's universe. I may not realize how deep the overall plot and idea of AL's universe are, but the anime could be a good starting point to delve deeper into it. I believe it would be hard to pack everything into 12 episodes, so there's nothing to blame on the adaptation. Consider this as an advertisement of the Azur Lane. Personally I'm satisfied with the plot development, as well as the underlying messages that it delivers throughout the series.
So I assume if you never played the game but heard quite often about this anime, and don't mind not seeing any male character during the whole series, you may give this anime a try.
And yeah, fanservice though.. it is also included. - "Cons?" - "Not a single one".
