This movie is exactly what you would expect it to be. Lots of crazy effects. Lots of unnecessary was-was family drama to fill out the breaks in the devastation. But it's of course much easier to deal with because they put The Rock in there. There really isn't much else to say about it.
If you like disaster flicks like this, this movie will not disappoint. There is plenty of chaos from all different angles and is enjoyable on that level. You should check it out. If this isn't your cup of tea - you should obviously pass.