It's ok, design and animation are well done, some fun things here and there but probably not worth remembering for long.

The pre internet part is ok, it gets you back into the story and characters if you've already forgotten the first one. The modem, access to internet and the discovery of its main actors is fun, but it gets old pretty fast. Only part really worth it is Knowsmore, fun, while being a pretty accurate description of reality.

A good part is the Slaughter Race section, that looks a little more adult, and Shank and her team are pretty cool.

It gets less interesting towards the end. I could say that the Dark Web and virus representations were extremely stupid, but they're actually not that far from what you would see in any, even more serious, mainstream media. The whole Ralph does meme videos thing was mostly boring. Also the scenarists seemed to have lost notion of their story's time, like the Internet is flooded by Ralph videos, it's been shared everywhere, there are tv news section on it and... not even an hour has passed.

The Disney princesses scene, teased in the trailer was one of the best parts, with a instant mythic status on Merida intervention.

The only good meme video is the post credits scene with a good ol' [spoiler]rickroll[/spoiler].

For all the rest, it's obviously full of references, but they're usually not particularly clever or funny, so it keeps you following the story but nothing really memorable.