Just watched it, and I was very disappointed. Gal Gadot is amazing, and Chris Pine and her still have great chemistry. But the movie feels tonally off. It doesn't even come close to the first movie, which also had a lame finale with a CGI villain. It also surprised me that although the movie is set in the eighties, it never feels like it.
As others have stated, there is a distinct lack of action. But even what little action there is, lacks punch. It all feels floaty, like a giant wirework ballet.
They do surprisingly little with the time period, and several of Chris Pine's reactions seem weird. He's never seen a train before? Seriously? He's not from the dark ages, they had trains in his time period. And which US President was that supposed to be? If you are going to have your movie be set in the 80s, you've got to show that president. Its just weird when you just show some unnamed fictional president. Also, the idea that a WWI pilot can just fly a modern jet is laughable. And I guess it also has unlimited fuel and can just fly from NY to Cairo. I guess we have Aircraft Carriers for other things then? The movie assumes its audience is a lot more stupid than it really is. The movie is filled with so many sloppy blunders like that, that it constantly took me out of the movie. Kudos for some how working an invisible jet into the plot though, that takes guts.
The movie's biggest issue are the pacing, plot and tone however. I just didn't feel any stakes. The 2nd villain is introduced awkwardly, and Pedro Pascal is a weak primary villain, despite all his talents. The few things I feel that did work, are the chemistry between the two leads, and Wonder Womans' crisis of conscience.
But this movie could have been a lot shorter, and I'm glad I didn't see this in a theater.