They even brought back Bill Murray! as he witnesses the start of the zombie outbreak ten years earlier while promoting a third Garfield film. Just from that setup, you can imagine how funny that scene is.
This movie is a thank you to the fans of the original. In this day and age, to have the same cast and crew ten years after the original movie is astronomically low. It rarely happens but somehow they made it happen and you have to appreciate that.
The movie is entertaining and funny. It falls short compared to the original movie, which was expected. It's been ten years and so many zombie movies have come out since then, and this movie doesn't offer anything special.
If you haven't watched Zombieland (2009). Then there is an overwhelming possibility you will not like this movie. Yes, it is a movie targeted towards fans of the original movie.