Good start, but then it gets ruined

It is not deep, but it is fun to watch. It does have a bit more of an edge to it than other similar films.

it is the rare 'crazy' movie that actually has something to say.

It’s fine. It's literally the definition of a fine movie. You’ve seen it before, you know every beat and outcome before the characters even do. Only question is how much escapism you’re looking for.