I'll answer: Spoiler I don't remember seeing Ares but he was listed in the credits. No robin suit. I was keeping an eye out for it.
Damn I was hoping someone would see the suit and ask about it. Hopefully it gets explored more at some point. Ares the same actor and everything?
Reviews are all over the place. Some say it is a “mess”, some say fans will love it despite the problems.
I believe the hype is certainly there from the general audience. The critics on the other hand seem to be torn right down the middle from the reviews I’ve seen. Very reminiscent of MoS. https://www.newsarama.com/37355-justice-league-tops-wonder-woman-in-advance-ticket-sales.html
http://www.fortressofsolitude.co.za/flixster-rotten-tomatoes-score-justice-league/ 48% Rotten Tomato score via Flixster app with 51 reviews in.
Ben Affleck doesn't seem to want to be there is already talking about exiting his role as Batman. http://comicbook.com/dc/2017/11/13/ben-affleck-batman-exit-dc-movies/ Also based on some reviews it seems that it affected Affleck's acting in the movie.
Again......the DCEU will benefit of Snyder not directing any other movies. This movie will be a fan pleasing, critic hating movie. Happens. Going forward, they have some very good directors to handle the other movies.
https://www.vanityfair.com/hollywood/2017/11/justice-league-review Justice League Is a Big, Ugly Mess "plays like a cheap video-game cut scene"
Yeah, reviews have been saying the CGI was really bad that Henry Cavill had his upper lip CGI-ed with very noticeable orange tint to hide his mustache during re-shoots.