The humor in the film is warm, never condescending or patronizing to the characters. There is always the sense of fun. The movie really sells itself to me by not making Mr. Hulot a buffoon alone in the crowd. Circumstance and happening reveals everyone to be capable of situational humor, the accidents of the movie are shared with a laugh.
It is an observational movie, and the majority of the humor is not forced, neither upon us nor upon the movie itself. It merely shows how people can get involved in each others' lives, how funny the average day can be. It is like attending a family reunion, really. The camera does not stick itself to Mr. Hulot, but goes anywhere for a laugh. If a small boy is doing something funny, the camera will be there to capture it all, and then leave the boy. This would make another film feel large, but because there is no story to the film, because there is no main character to feel especially attached to, it always feels personal, it always feel like you are seeing something nobody else is.
Perhaps the best part is that the film sticks with you for days afterward, and soon Mr. Hulot's Holiday shows its real genius, as you start noticing similar things happening around you.