I went to see this opening night, and was not even a little bit disappointed.
As a brief, spoiler-free review: Visually stunning, with good music, I would recommend it to fans of superhero/action movies. Setting it during World War I rather than World War II worked with some of the themes about human free-will in interesting ways (and contributed to some of the aforesaid stunning visuals). I thought the setup used to frame this (Wonder Woman’s origin story) was well-done. I am not greatly familiar with the DC universe, so this take on some of the Greek mythology struck me as strange, but interesting. Definitely recommended.
More in-depth thoughts (with spoilers) below.